Question:
I bought a new 2008 Isuzu NPR and want to wire it for my trailers that are wired for a Chevy PU. What kind of stuff will need to wire them correctly? Also what is the color code/circuit id for the big trucker type round 7 pin plug?
asked by: Gordon last update: July 17, 2008
Reply:
The vehicle you have is a little larger than we are used to contending with. I can show you a general wiring diagram that shows how the 7 pin is typically wired for a smaller truck. We do offer the 7 pin truck side and the 7 pin trailer side connectors. You'd need to contact your Isuzu dealer for specific wiring information.
reply by: Mike
Question:
Which wires do i connect my trailer socket to at the rear of my Renault Laguna sport tourer 2004 model
asked by: Keith last update: July 17, 2008
Reply:
I am unfamiliar with the vehicle you are speaking of, but I can give you some general advice. Whether or not you are using a converter, you'll want to use a circuit tester to locate the appropriate wires to gain access to the lighting circuits. You don't mention which connector you are wanting to install, but I'll assume it's a 4 pole. You'll need to use a process of elimination to locate the correct wires. Activate the left turn signal, and then test the wires until you find the one that's getting the signal, then tap into it for your connection. Do the same for the right turn, and running lights. If you are using a converter, you'll also need to tap into the brake light circuits too.
reply by: Mike
Question:
I own a 2000 Toyota Rav4- I would like to install a 4 wire trailer light kit is there a connection point in the rear storage compartment on these models and what wire harness kit can I get which I could install myself model # & cost of?
asked by: Tom last update: July 16, 2008
Reply:
We have a T-1 connector available for your vehicle. The connection point is behind the tail light assembly on both the sides of the vehicle. If you can change a burned out tail light bulb, you should be able to install it yourself with no difficulty.
reply by: Mike
Question:
Trailer 7 round to 5 wire trailer connector on Nissan Titan 2007 and 2007 four winns trailer. Directionals and flashers work on right side on occassion and do not work on left side Any suggestions ?
asked by: Wayne last update: July 16, 2008
Reply:
You'll want to test your 7 way and the 5 way adapter using a circuit tester. If you are getting power to each pin on the connector and adapter when that particular function is activated, then the problem is in your trailer wiring. Starting at the connector, and working your way back, check for corroded connections or anything else that could cause an intermittent problem such as the one you are experiencing. Look for wires on the right side with worn or cracked insulation, or wires that are pinched or broken.
reply by: Mike
Question:
i have a 2005 chevy suburban with the 7 way connector the a 4 way on the trailer. everything seems to work except when i turn the emergency lights on then i only get the rh signal to work and brake but not the lh. any suggestions?
asked by: John last update: July 16, 2008
Reply:
The first thing I'd do is try to narrow down whether the wiring problem is on the vehicle or the trailer side. With the trailer not connected, use a circuit tester and check all the pins on the 7 way. Make sure you activate that pin's function as you test it. Then plug in your adapter, and test that. If all these items check out OK, then the problem is somewhere on your trailer. Trace the wires for the left hand signal and brake back from the trailer connector. Look for corroded connections and pinched, broken, or frayed wires. If you aren't getting a signal at the connector or adapter, check the owner's manual for the location of the fuses that control the towing circuits, and make sure there aren't any that are blown.
reply by: Mike
Question:
My thirteen years old shore lander 18 foot trailer has a four pole flat connector but it has five wires going into it! My trailer is not equipt with brakes, just side markers ,turn and brake lights. I cant find a replacement connector with 5 wires going into it. Any ideas?
asked by: Steve last update: July 16, 2008
Reply:
The 5th wire you describe is most likely the feed for the marker lights on one side of your trailer. You can use a regular 4 way trailer end connector and a few feet back from the coupler, connect the wires for the marker lights on both sides with the brown wire. The white would ground to the frame, the green to the right brake/ turn signal and the yellow to the left brake/ turn.
reply by: Mike
Question:
How do I check the wire positions in the harness connecting my 95 Ford Explorer to my 01 Viking 2170 pop-up? I just had a 7-blade connector installed on the Ford to match the harness I already had previously used on a 97 Grand Caravan. Now all the camper signal lights seem to work, just not in sync with the Ford - R. blinker makes all flashers go headlights turns R. running light on, L. light off, etc. Is there a schematic for this connection? Any help is appreciated.
asked by: Syd last update: July 16, 2008
Reply:
We have a web page that contains a diagram showing the way a typical 7 way connector is wired (keep in mind, the view is from the rear of the connector.) Your wire colors might not be the same as in the diagram, but you can use a circuit tester to ensure each side of the connector is wired the same way. You will probably find that you'll need to swap a few of the wiring connections around so they match up correctly.
reply by: Mike
Question:
I have my Dodge Ram Van 2500 1995 wired with a connection that has 6 wires. Their colors are: Red, brown, green, blue, pink and white. This was wired to pull a pop up camping trailer. I no longer have that trailer and now have a boat trailer. That is wired with a 4 connection hook up. Those colors are White, brown, yellow and green. Can you please let me know how I can connect the vans 6 wire configuration into a 4 connection t configuration?
asked by: Maureen last update: July 15, 2008
Reply:
What you are wanting do do is very simple to accomplish. We carry a 6 pole to 4 pole adapter that will allow you to use the new boat trailer.
reply by: Mike
Question:
I have trailer that came with a five pin connector. My old 97 chevy 1500 only had a 4 pin connector so the shop jumped something together and everything worked fine. Now I have a 08 Chevy 1500 with a seven pin connector. I was advised to purchase an adaptor, which I did. But now I have no blinkers on the left side, turn or emergency. I have taken to three different shops and the problem has yet to be cured. I would appreciate your insight and assistance on this problem.
asked by: Gordy last update: July 15, 2008
Reply:
The first thing I'd do is try to narrow down the source of the problem. I'd use a circuit tester and test the 7 way, and then the adapter, to make sure all the functions are working. If all checks out, the problem is in the wiring on your trailer, and will need to be tracked down. If the port for the left trurn signals doesn't show power, the problem is on the vehicle side, you'll need to check the fuse box under the hood, and check and replace them as needed.
reply by: Mike
Question:
OK I am trying to do a custom installation as the replacement part is no longer available for my vehicle. I have a 1987 Ford Bronco, it came with the factory towing package, which has a bumper mounted 7 pin RV plug. It has to be hard wired as there is no factory connector/splice. Here is the problem, there are 7 wires coming out of the receptacle and 8 wires coming from the trucks wiring harness. The ones from the truck are labeled inside the loom, the labels are, 1 Back up 2 Ground 3 Right turn 4 Left turn 5 Tail marker lights 6 AUX / Battery 7 Electric Brake Control 8 STOP LIGHTS So how do I make a 7 wire receptacle work with the trucks 8 wires? Nearest I can figure, the STOP LIGHT wire has to be fed to both the right and left turn signal wires, but wont doing that cause the wires to back feed and make both lights light when ever either turn signal is used?
asked by: Brad last update: July 15, 2008
Reply:
You'd wire that using all the wires, except the stop light (you describe it as #8). This wire is meant for a 3rd brake light.
reply by: Mike
Question:
How do I connect a blue reverse wire in a 5 pin trailer light system to a Jeep Grand Cherokee 2005. Had 4 pin system by UHaul and bought a new trailer. I cannot identify which wire to connect to by color coding. Any help is appreciated.
asked by: Joe last update: July 14, 2008
Reply:
It sounds like you are using a 4 to 5 way adapter with a trailer that has a hydraulic coupler. The wire needs to attach to the back up light circuit, to disengage the coupler when the transmission is placed in reverse. The best place to access the back up light circuit is directly behind the back up lamps.
reply by: Mike
Question:
I am trying to repair a side running light on a trailer I just bought and I have signal lights and brake lights. The problem is no running lights. Does the light have to have brown in and white out to complete the circuit. It is the last light in the harness on the left side.
asked by: Jim last update: July 14, 2008
Reply:
The way that particular light is wired will depend on how each light is grounded. Typically, the metal to metal connection of the hardware that attaches the light to the trailer frame provides the ground. In some instances, there will be a separate ground wire. If your light is grounded directly to the frame, make sure the connection is tight, and the two metal surfaces are corrosion free.
reply by: Mike
Question:
02 dodge caravan w/factory towing, keep blowing left running light fuse under hood. First time I have had a problem. Changed both 4-pin connectors on car and bost. All other lights work. Any suggestions where to look?
asked by: Tom last update: July 14, 2008
Reply:
Fortunately, you have the problem narrowed down! You have a short circuit somewhere on the trailer in that running light circuit. You'll have to start at the connector, making sure there is a secure, corrosion free connection there, and trace the wire back. Look for worn or missing insulation on the wire, or a wire that is pinched. Somewhere there is a break in the circuit, causing the wire to ground out of the trailer frame.
reply by: Mike
Question:
I have a 2000 Olds Silhouette minivan. Ive wired a 4-pole plug to it. On my trailer, I get lights when I turn on the turn signal, and running lights, but no brakes. I opened the lights up on the trailer its a preowned custom built, so I dont know if this is right but the yellow/green turn wire goes to a two-element bulb, and the brown running wire splits and one part goes to the same two-element bulb, and the other goes to a small single-element bulb. My thinking would be that the smaller bulb would be the turning light, and the two-element bulb would be the running/brake light one for running, both elements for brake. This is not so. The way it is working is that both lights light up but only the top element of the bigger bulb for both the turning light and the running light. And nothing lights up for the brakes. The trsiler came wired and everything with a 4-way plug, so thats what Ive wired into my van. But nothing seems to get the brakes to light up. Is the trailer wired wrong? Do I need to change things around? Ive already played around and tried a few different combos on the trailer light, but that gets nothing to work. Any suggestions?
asked by: Eric last update: July 14, 2008
Reply:
How did you wire the 4 pole? Your vehicle needs a tail light converter. If you've just wired directly into the vehicle without a converter, you will have the problems you describe.
reply by: Mike
Reply:
thanks for your help. I got a converter, but now am having another issue. I get my turn signals, and I get my brakes. But when I turn on my headlights, nothing works... the running lights done light up and the brakes/turning goes out too. My van has two lights in the taillight that turn on with my headlights/running lights. One of them gets brighter when the brakes are used. I wired my running light cable to the light that is always on, and brake light cable to the light that gets brighter with the brakes. Shouldn't that work?
reply by: Eric
Reply:
Is this problem occurring with a trailer hooked up? The T-1 connection is strictly plug and play, no splicing or wiring needed, which is why I recommend it. However, if you've wired it yourself, the way you describe, it should work. I'd recommend that you use a circuit tester and verify that the brake circuit you tapped into only shows a signal when the brakes are on, not when the turn signals are activated.
reply by: Mike
Question:
I just bought and installed the T connector wiring harness from etrailer for a hitch on a 2001 Dodge Durango. It was pretty simple but when I turn on either the right or left turn signal both lights will flash on the small trailer I have connected. Do you know how I can fix this so the turn signals work correctly?
asked by: Tracy last update: July 14, 2008
Reply:
You may have a ground problem. In your situation, you have a ground that is strong enough to provide some lighting functions but not all. This is called a weak ground. When the taillights and brake lights are used at the same time, it creates the maximum amp load of the lights on the trailer. If a ground problem exists, it will show at this point. The places to check grounds are as follows: 1. The connector on the vehicle should have a ground wire secured tightly to a clean surface on the frame. A wire attached to the body or a surface with undercoating or rust can cause a ground problem 2. The connector on the trailer should have a wire from the connector secured tightly to a clean surface on the trailer. 3. Each tail lamp assembly at the back of the trailer also must be grounded. This is done in one of two ways. The first is by a separate wire coming from the back of each tail lamp assembly being secured to the frame. The second, and most popular, ground is achieved through the bolts of the tail lamp assembly. In this case, the lamp housing must be attached to the frame of the trailer. If the lights are mounted on wood or PVC material, the light will not receive ground.
reply by: Mike
Question:
I have a 2007 Ford f-150. It came with the factory flat 4 plug. Was wondering if there was a plug on the pickup that I could plug a adapter into for a 7 way plug instead of having to cut and splice wires?
asked by: Rocky last update: July 14, 2008
Reply:
We have a 4 way to 7 way Adapter that will work with your current wiring configuration. Plug the connector from the adapter into your existing 4 way, and run the wires for brake, power and the accessory. You will have to splice the 12v and the blue brake wire from the adapter into the existing harness under the vehicle, but it is a very simple process that can be seen in this instructional video.
reply by: Mike
Question:
My Prodigy brake controller is not seeing the trailer brakes shows n.c.. I have verified that the tow vehicle side is working with a volt meter and seeing up to 12V when using the manual override lever on the brake controller. On the trailer side, I get about 3.5 ohms of resistance across the ground and electric brake pins. Is that the correct resistance? Looking under the trailer, on the pax side, I see two wires that are not attached to anything going into the brake drum. I assume those are the magnet wires, and that wheel is not going to be braked. What do I need to do to connect it?
asked by: Matt last update: July 9, 2008
Reply:
The two unattached wires exiting the brake drum are your culprit. One wire taps into or connects with the brake wire that runs forward to the trailer connector, and the other (it doesn't matter which) is grounded to clean, bare metal on the trailer frame. The controller isn't reading the trailer because of this open circuit.
reply by: Mike
Question:
I have a dead Aux. lighter plugfor cellphone,etc .I cant locate the fuse,if I understand correctly,this fuse should be inline with the battery. 1999 Dodge 1500 Ram Pick up,Ext. cab.
asked by: H.L. last update: July 9, 2008
Reply:
I'd recommend you check your owner's manual. There should be a section relating to the fuse panel, which will tell you which fuse relates to which circuit.
reply by: Mike
Question:
I have a 2006 Chev 3500 express van 15 passenger that I need to put an electric brake hookup as well as hitch and lights on it. I dont see any adapters for this van/or further information- So any suggestions or further information/suggestions you can give me on the brake controler/lights or hitch?
asked by: Nick last update: July 9, 2008
Reply:
Let's start with the hitch. Depending on the load you wish to tow, we have several receiver hitches that would work for your vehicle. To tap into the brake lighting circuit, you'll need the T-1 Connector. For the brake controller, I'd recommend the Tekonsha Prodigy. The fact that it's easy to use and set up would make it a great choice. Because your van lacks the port where an adapter would install, you'll need the install kit, which includes everything you need to complete your install, even the 7 way trailer connector. We also have an informative web page that contains lots of valuable information that you'll find helpful. There's also a video that explains in greater detail how the install kit works.
reply by: Mike
Question:
I bought a European Trailer with Amber Turn Signals. Meaning brake lights and turn signal lights are seperate bulbs/circuits. Strange thing is that even the tail lights are seperated for the left and right sides. Questions: What is easier? 1. Replace the European 7 Poll Trailer connection on the new trailer with an american conversion adapter kit or replace the 7 Pin trailer light receptacle on my 1997 Ford F-150 Flareside? I do not know how to seperate the signals for the brakes and turn signals controlled by the flasher assembly. 2. Will this work? I havent hooked up to the trailer yet but I mounted a European Trailer Receptacle to replace my existing American Trailer Recptacle as follows: I hooked in the Left and Right turn signal/brake wires into there apporiate slots on the European Outlet Receptacle on my truck. I used the electric brake wire to power the brake lights. I placed a jumper wire between the Left and Right tail lights. 3. Or how can I seperate the circuits so the brake lights and turn signals dont come on at the same time? Here is how the 7 Pin European receptacle needs to be wired if I can somehow seperate the brake & turn signal circuits. 1. L/H Turn 2. Fog 3. Ground 4. R/H Turn 5. R/H Tail 6. Brake L/H & R/H Sides 7. L/H Tail What trailer light adapter should I get if I need to replace the European one on my new trailer so it will work with my truck?
asked by: James last update: July 8, 2008
Reply:
I'm sorry it took awhile to respond, we had to do some research and testing to make sure the solution we're offering will work. What you need is a Vehicle to vehicle tail light converter. This item will separate the brake and turn signal circuits for you. The converter box actually shows you which wire does what function, making installation easy. You'll want to mount it on the trailer behind the connector.
reply by: Mike
Question:
I have a 92 Nissan King Cab truck and want to know what wires in the rear harness to hook up to a 4-way flat connector?
asked by: Joseph last update: July 7, 2008
Reply:
Your vehicle would require a converter. We offer a T-1 Harness that would plug into the connectors at the rear of the tail lights, no cutting or splicing required.
reply by: Mike
Question:
I have a 7 Pin connector on my 1999 Expediton. I dont have any power going to the #4 pin black wire. Is there a fuse that controls this? I cant seem to find it in the either fuse panel Under dash or hood.
asked by: Ron last update: July 7, 2008
Reply:
If your 7 way connector is factory installed, there should be a series of fuses under the hood that controls the towing circuits. Please consult your owner's manual for the exact location of the fuse that controls that particular circuit.
reply by: Mike
Question:
Your advice is GREAT! I have a 97 F250 HD gas model with 7 blade wiring harness [factory?] I have everything on my trailer working except marker and running/tail lights which are essential for night driving. Any possible solutions / shortcuts / patchwork. Ford says look in the control box under the hood / everything appears O.K.....HELP!
asked by: Robert last update: July 7, 2008
Reply:
The first thing that I'd do is use a circuit tester and determine if you are getting power through the connector (with the lights turned on.) If you are getting power there, just trace the wire back to the trailer, looking for broken, frayed, or pinched wires. If you have no power at the connector with the lights on, I'd double check that under hood fuse box. Check with your owner's manual, to see which fuse relates to that circuit.
reply by: Mike
Question:
I have an older ezloader trailer with a 4 way connector. I need to replace it, but I see that it has 5 wires coming into it, and only the 4 poles going to the vehicle connector. Can I get a replacement trailer connector or how do I deal with this?
asked by: Kyle last update: July 5, 2008
Reply:
Probably what you have there is two wires coming from one of the poles that would split to either side of the trailer and control the running/ tail lights on each side. You can use a regular 4 way trailer end connector and simply splice those two wires together before they attach to the connector.
reply by: Mike
Question:
I would like connect a light duty 4 pins trailer connector on my volk jetta tdi 2002. I would like the correct diagram.
asked by: Yvon last update: July 5, 2008
Reply:
Your best bet would be to use one of our Circuit Protected Taillight Converter Hardwire Kit this item contains everything you would need to complete your installation, including scotch locks for making your connections and even a circuit tester for ensuring that you are tapping into the correct circuit. I do not have a wiring diagram specific to your 2002 Jetta, but we do have an instructional video that although not for your specific vehicle, will give your the general idea on how to install your converter.
reply by: Mike
Question:
1999 Alero Think I have it wired properly. Brake light works turn works but left blinks lightly Left turn works but right blinks lightly Emergency lights flash PROBLEM.... When I turn on the headlights all lights on trailer go off.
asked by: Bill last update: July 5, 2008
Reply:
It sounds as if you have a poor or weak ground. On both the trailer and the vehicle side, make sure your ground connection has been made securely to clean, bare metal.
reply by: Mike
Question:
im trying to succesfully wire plug w/4 pins to my 06 silverado.My problem is the brake lights. Blinkers seperate from brake light. Do I need another pin?. Am i splicing in the wrong part of the harness.
asked by: Daniel last update: July 3, 2008
Reply:
Your truck should have a socket located above the spare tire, into which you can plug a OEM Style 7-Way & 4-Way Trailer Connector. The connection should be very simple.
reply by: Mike
Question:
I have a 2003 Chevrolet Tahoe with a factory trailer towing package but I do not have power on the postive pin at the 7 way plug Is there a fuse or something that I need to do?
asked by: Tom last update: July 3, 2008
Reply:
There is a power distribution box (fuse box) under the hood of your vehicle that contains fuses that control the tow package. On some Chevy vehicles, that fuse was not installed, or the final power connection was not made under the hood. We have an informative web page complete with photos and step by step instructions on how to make this final connection if needed.
reply by: Mike
Question:
I HAVE A 2008 HUMMER H3 ALPHA,I AM WIREING UP TRAILER LIGHTS,FOUND 4 WIRES ABOVE THE BUMPER I NEED A BRAKE WIRE. MY TRAILER HAS A BACKUP SOLINOID.IS THERE A WIRE IN THE BACK OR CAN I TAP INTO THE REVERSE LIGHTS WITHOUT CAUSEING ANY PROBLEMS
asked by: Scott last update: July 2, 2008
Reply:
You can tap that wire into the reverse lights. This will deactivate the surge brake when you shift the transmission into reverse. If your trailer has a 5 way connector, you can use a 4 to 5 way adapter. You'd use the scotch lock to tap into the reverse light circuit.
reply by: Mike
Question:
i have 2002 serria truck tow harness 4 wire hook up right turn & signal work tail light work yellow wire has no power for brake or left signal have checked wiring&plug no juice brake light&signal light sperate red&yellow
asked by: Richard last update: July 2, 2008
Reply:
Your vehicle has an additional fuse box under the hood that controls your towing circuits. If you'd check there, you'll probably find a blown fuse. Please consult your owner's manual for the location of specific fuses.
reply by: Mike
Question:
how to wire up a tap/hoppy trailer breakway battary kit #20100 trailer is a 19-82 belshe backhoe
asked by: Doyle last update: July 2, 2008
Reply:
We don't offer a breakaway kit with that particular part #, but here's a typical wiring diagram.
reply by: Mike
Question:
Hi I have an 04 chevy silverado 2500hd diesel. I just bought an enclosed 28 car hauler that has 5500 lbs axels. I have many questions, First I need to wire the trailer brakes, my truck came with the tow package and 7 way plug factory. Also I want to run a battery in the trailer to run lights, stereo, and a winch, How do I do this? Also please recomend a winch to get. Just be used to pull cars in if needed. I also need a wieght distributing hitch. My hitch says it will tow 7500 lbs w/o weight distributer and 12k with. My trailer will only handle 11k lbs. Also do I need a sway controller with this? I also want to try and install sollor pannels on roof to charge battery in trailer any sugestions?
asked by: Eric last update: July 2, 2008
Reply:
To wire your trailer brakes, you'll first need to choose a brake controller. You'll also need a brake control wiring adapter. The adapter will connect to the port under the dashboard. We have an informative web page that contains more detailed installation information.
You can connect the trailer battery to the 12v lead on your trailer connector, but you'd need to unplug your trailer when not in use, to avoid draining your tow vehicle battery. If this isn't feasable, you'd need a battery isolator to keep the auxiliary battery from robbing power from the main battery.
Here are a few general purpose winches that would be great for mounting on a trailer. Just choose the weight rating that you need.
You mention that you will be towing a max of 11,000 on your trailer, as that is its capacity. I'd recommend a weight distribution system good up to 12,000 lbs. This system will aslo accomodate the Dual Cam High Performance Sway Control System. The dual cam sway control will actually stop trailer sway before it can occur.
I'm sorry, I can't give you any suggestions on mounting the solar panels.
reply by: Mike
Question:
I hooked a new trailer to my ford 150 trunk 98 model. The trailer blew our several fuses. I was able to get power back to my trailer receiver plug on the truck except the brake lights and turn indicators/yellow&green wire. I have checked every fuse and can not find the problem. Any idea where to check?
asked by: Keith last update: July 1, 2008
Reply:
If your vehicle has the OEM tow package, there will be an additional fuse panel under the hood that controls the towing circuits. Check for a blown fuse there. Consult your owner's manual for the actual location of the fuse in question.
reply by: Mike
Question:
I have a 97 F-250 Diesel with a 7 prong connector. When connected to two different 6-prong trailers through adapters, the brakes arent working. I do have turn signals and flashers. I tried new adapters, with the same results. When the trailers are connected, the brake control box light is NOT lit. All of the related fuses have been checked. Where should I look next?
asked by: Houston last update: July 1, 2008
Reply:
If you'll look at the wiring diagram for a 6 way connector, you'll see that in some installations, the 12V and electric brake wire is switched. The view in the diagram is from the inside of the plug. Try swapping the the 12v and the brake wire at the connector, and see if that solves your problem.
reply by: Mike
Question:
I am trying to wire a 1997 Honda CRV for a flat four trailer wiring harness. The plastic connector has been cut off the vehicle so there are only the six exposed wires as follows: BLACK = Ground GREEN/YELLOW = Right Turn Signal GREEN/WHITE = Brake Light RED/GREEN = Taillight GREEN/RED = Left Turn Signal GREEN/BLACK = Back-Up Light Any help would be greatly appreciated.
asked by: David last update: July 1, 2008
Reply:
To wire your 4 way, you'd need to purchase a converter. The back up light wire would not be used, and can be capped off. The wires on the converter are labeled, just match them with the appropriate vehicle wire.
reply by: Mike
Question:
I have a 96 ford explorer and at one time I had a 5way boat trailer wirring harness hooked up working fine. At this point and at the same connection their is no power comming out of that 5way. I checked the fuses under the sterring wheel and found one blown, I still have no current at the tie in point? HELP
asked by: Lenny last update: July 1, 2008
Reply:
First thing I'd do is determine if your Explorer has the tow package (most of them did.) If you do, there will be a plug under the vehicle that the 4 way plugs into. If not, you will be using a powered converter that connects with the vehicle behind the tail lights on each side and draws power directly from the battery. If you have the tow package, you might have a separate fuse panel under the hood that controlls the towing circuits. If you are using the powered converter, either the converter itself is bad and needs to be replaced, or the fuse on the 12v lead to the battery from the converter has blown. I'm guessing it's a bad converter, which would explain why replacing the fuse didn't fix the problem.
reply by: Mike
Question:
I have 99 chev silverdo 2500 4/4 factory trailer wired, I cannot get stop lights on trailer ,check recept.,with test light doesnt appear to be there, signals work ,park lights work, where should i check now
asked by: Chris last update: July 1, 2008
Reply:
If your 1999 Silverado has the 'new' body, your tow package has a separate fuse panel, usually located under the hood. Since everything else is working ok for you, I'd recommend checking there for a blown fuse.
reply by: Mike
Question:
I have an 2008 Tundra. The factory Trailer Brake Jumper Harness has 5 wires. One is marked GREEN- headlamp switch to vehicle trail lamps.Do I have to run a wire back to the trailer from this wire or is it connected under the dash?
asked by: Brian last update: June 30, 2008
Reply:
That fifth wire is not needed, and can be capped off.
reply by: Mike
Question:
I just bought a used 2003 Silverado 1500 which has a towing package but hasnt had trailer brakes or a battery lead wire installed. How do I connect the battery lead wire?
asked by: Brian last update: June 30, 2008
Reply:
We have an informative web page that describes how to make those final connections under the hood.
reply by: Mike
Question:
I have a 7way flat pin from my 2003 4runner and 86 double axle travel trailer. After everything has been working fine, the running lights are staying on after the car is turned off and runs down the battery.
asked by: Willie last update: June 30, 2008
Reply:
It sounds as if your trailer connector is not wired correctly. The running lights are probably hooked to the 12v lead in the connector. I'd check the connector and make sure the the vehicle side and the trailer side are wired the same, so the correct wires are being connected. If you'll look at this typical wiring diagram, you can see how the connectors should be wired.
reply by: Mike
Question:
i have a magic tilt aluminum trailer 35ft. i have a steel surge brake system on the trailer. this is where i am grounded. i am having trouble i think with the ground. can i ground the trailer lights to the aluminum trailer????
asked by: Seth last update: June 30, 2008
Reply:
You can ground your lights to the aluminum trailer, but that might be what's causing your problem. Since trailer has a tilting bed, it is possible the ground is not passing through the pivot point resulting in a poor ground. The solution to this is to route a ground wire from the connector at the front of the trailer to each lamp assembly at the back of the trailer bypassing this pivot point.
reply by: Mike
Question:
How do i deactive the electic brakes when backing up?
asked by: Jim last update: June 30, 2008
Reply:
You don't mention the wiring set-up on your trailer. Does your trailer have the surge brakes? If so, there is supposed to be a wire tapped into the back up lights on the tow vehicle that will deactivate the brakes when the transmission is in reverse. If you could send me some more specifics about your trailer and wiring set-up, maybe I can be more specific.
reply by: Mike
Question:
Trying to wire a Towready 20048 break-away switch/battery. The switch has two black wires, one has a terminal end for the battery. The manual says one end goes to the blue brake wire and the other goes to the positive side of the battery. The battery/charger unit has a yellow, white, black and red wire. The black and red wires both have terminal ends that look like they fit the battery. The instruction manual makes no reference to the black and red wires. They cant both go to the battery since one side of the battery is already used up. Can you help? Towready.com was useless as they only have the same instructions online, and no phone or email contact info
asked by: Bill last update: June 30, 2008
Reply:
Here's the mystery connection. There are actually 3 connections at that battery. Both black wires connect to the yellow brass ADAPTER included in kit, which connects to the battery. The adapter is small and easily missed. You might have to shake the battery box, because it might have slipped under the battery, which is zip tied in. The red wire connects to the other pole on the battery. It would seem that the instructions have left out this piece. Sorry for the confusion.
reply by: Mike
Question:
I own two Hondas a 2002 Accord with a t-one connector, and a Honda Element with a shorted out powered system that I need to replace. My trailer currently has Incandescent lights, and the 2002 Honda 4 amps capacity does OK, but wont power all the lights under full load. The Element powered system worked fine till the box I assume went bad. Id like to know if the LED ligthing systems will work with a 4 amp capacity system Im pretty sure both the element and accord are rated 4 amp without having to run additional power wiring to the fuse box, or battery?
asked by: Bruce last update: June 30, 2008
Reply:
LED lights will draw less power than a comparable incandescent system. If your lights are a little on the dim side now, with the LED they will most likely be brighter (assuming that everything is wired correctly.) I happen to be a big fan of the powered systems, as they draw the power directly from the battery, instead of through the vehicle's wiring system. It's a less troublesome installation, if you don't mind the extra installation steps.
reply by: Mike
Question:
I want to charge a spare battery sitting in the back of the truck for the RV when driving without the RV. I bought a spare trailer end connector. Would connecting the battery to the white ground and the black 12v termimals on the truck outlet work? My circuit tester does not seem to light up when hooked up to those.
asked by: Jim last update: June 30, 2008
Reply:
What you are proposing should work. If you are not getting 12v at the outlet on the rear bumper, you'll want to make sure that all of the fuses that apply to your towing circuits are in place. You don't mention what make of truck you have, but in some of the later model Chevy/GMC trucks, the final connection for the 12v. feed needs to be completed. If this is the case, this informational web page should be helpful.
reply by: Mike
Question:
SHOW THE CORRECT WIRING OF A BRAKE-A-WAY SYSTEM. I HAVE SEEN SEVERAL DIFFERENT WAYS AND WANT TO KNOW THE CORRECT ONE.
asked by: Robert last update: June 28, 2008
Reply:
Here is a typical break away kit that we offer. To see the wiring diagram, click on the 'instructions' link on the right side of the page. You don't mention which break away kit you have, but this should point you in the right direction.
reply by: Mike
Question:
Hi, I have a 01 Hyundai Elantra that I am trying to connect a wiring harness to.. Can you give me some advice as Im having issues finding the right wires in the tail light area to connect to?
asked by: John last update: June 26, 2008
Reply:
The best way to do your installation is to use a circuit tester. Starting behind the taillights, use the tester to determine which wire is the left and right turn signal, and the running lights. For the left turn, turn on the left turn signal, and then test the wires to see which one has voltage that is turning on and off, and connect the yellow wire to that. For the right turn, use the same process, only using the green wire. Here's a video for a different vehicle, but it will describe the process.
reply by: Mike
Question:
I recently purchased your Hopkins 47175 4 to 6 and 4 adapter. It appears to be wired opposite to the diagrams pictured on your web site. tow vehicle side looks like trailer side Are your diagrams veiwed looking at the connector side or the wire side? My trailer was purchased used and the connector had been replaced. It will be simple for me to rewire the trailer connector, but I want to be sure I can tow other trailers with stndard connectors.
asked by: Matthew last update: June 26, 2008
Reply:
The diagram on our website for the vehicle side and the trailer side is looking at the back of the connector, sorry for the confusion.
reply by: Mike
Question:
I recently bought a used utility trailer and had to replace the old wiring. It had four wires running, turn and brake left, turn and brake right plus groundin the cable that was used. My 1999 Dodge truck hitch has a 7 flat pin receptical which this trailer did not match. I bought a 7 pin connector with 8 foot cable plus a 7 pin junction box from etrailer. I wired all the seven wires in the new cable to the terminals per the color code labels in the junction box terminals. I only have the four wires going to the trailer lights from the box. I wired them to the right turn, left turn, tail lights and ground terminals. Only one running or tail light on one side works so I may have a bad ground on one side of these old rear lights. No stop or turn lights on any. Q1:If I have one light work on the dual filament bulb wouldnt that mean the ground was good for both filaments and I should get the other light also on that bulb? Q2:How do I get a stop light on both rear lights in the dual filament bulbs with a separate stop red wire terminal in the junction box not connected to any trailer wires? Since my truck hitch has seven wires there is no converter correct?
asked by: Joe last update: June 26, 2008
Reply:
What I suspect happened is that your 7 way connector with the 8 foot cable is wired to the trailer incorrectly. The color coding on the cable's wiring is DIFFERENT than what is on your trailer. The proper connections are as follows: The White, black, and blue wires are wired to their like color, but the red on the connector goes to the yellow trailer wire. The brown connector wire goes to the green trailer wire, the green connector wire goes to the brown trailer wire, and the yellow connector wire will run to the auxillary for the trailer (if needed.) This will fix your problem. You are correct in assuming that if one light works on a dual filament bulb, the ground is ok for both. Because your vehicle has the 7 way connector, the conversion has been done and a converter is not needed. The green and yellow trailer wire carry both the turn signal and the brake light signal.
reply by: Mike
Question:
turn on either signal light, all of the lights, except the headlights start blinking too. Push the brake pedal and all of the lights lit up, I have a 2000 chevy silverado.
asked by: Kerry last update: June 26, 2008
Reply:
What you are describing is a symptom of a poor or weak ground connection. Make sure that the trailer connectors on both sides of the trailer connection is grounded to clean bare metal.
reply by: Mike
Question:
I installed a hitch and reese wiring kit on my 04 Chevy Venture. The wiring instructions are not great. Not much help in the steps to removing the interior trim, and mine has rear air which is not mentioned in the instructions. What do I do with the 4-way now that its wired up? Does it just run out the door when I hitch up the trailer? The instructions made no mention of how to route the 4-way to the hitch.
asked by: Jim last update: June 25, 2008
Reply:
I'm sorry you found the instructions with your wiring harness lacking. Keep in mind that your Etrailer purchase does include any technical assistance you might need. All you have to do is call us at 800-298-8924. The 4-pole trailer connector is meant to be stowed in the rear cargo area when not in use. When you need to tow, run the 4 way out the door, and close the hatch on it. The weatherstripping provides enough cushion to prevent damage to the wires. Once again, I'm sorry those instructions were not clearer.
reply by: Mike
Question:
Have two issues with my boat trailer lights. Right rear side marker does not work and bought new identification bar and that doesnt seem to want to work. Old identification bar worked one light worked. I cant figure out why these towo dont work. I believe they are feed through the tail lights brown wire coming out of the light and split off to each light after that. Everything else works turn signals, other side lights and brake lights. Help, what should I do next or try. Thanks a million. Great website!
asked by: BJ last update: June 25, 2008
Reply:
The best thing to do would be to trace the wire from that right rear marker and the identification bar back to a working light. There are two common ways to wire trailer marker lights. At the trailer connector, the wire (usually brown) will split with one 'leg' running down the passenger side and the other running down the driver's. Or, they will run down one side, feeding each light as they go, and then run across the back to the other side. Look for a loose or corroded connection, worn insulation, or a pinched or broken wire.
reply by: Mike
Question:
I have a 97 f250 diesel and I need to install a 7 way round vehicle connector. I cannot find a plug in harness to fit my connectors.
asked by: Mel last update: June 24, 2008
Reply:
You will need two items to complete your installation. You'll need a T-1 connector to tap into the electrical system, along with an 4 Pole to 7 Pole Vehicle End Trailer Connector Adapter.
reply by: Mike
Question:
I have a typical 7 way round plug connection and I get everything but my trailers running/marker and tail lights. I assume the problem is in the trailer plug because, if I use a 4 pin adapter for a set of magnetic lights, the tail lights work. How can I trouble shoot this problem. Is it possible that the pin connector is just dirty?
asked by: Andy last update: June 24, 2008
Reply:
Since everything works OK when you use the 4 way adapter, the problem would then be on the trailer wiring itself. Typically, it's the brown wire that controlls the running/ marker/ tail lights. You'll have to start at the trailer connector, and work your way back, looking for corrosion and pinched, broken, or frayed wires. Since none of the marker lights work, it's probably in or near the connector.
reply by: Mike
Question:
Hi. I have a Silverado K1500 Crew Cab with a 6 Lift. It came with no OEM hitch but I just bought one Curt I think. Im not towing something special right now but I want to be prepared. I have some doubts here while looking at your accesories and parts: 1. Because of the lift, how can I be sure about hitch height? is there any standard? 2. Even though the hitch complete, bolted came with no harness or way to place it I have seen there are some conectors below the truck. I have also noticed new Silverados came with a connector in the bumper for towing, can I place something like it in my truck? What parts do I need? I know this may be strange but I would like to have my truck ready for towing. I may buy some wave runners and I also collect classic cars so I think I should be preppared for towing.
asked by: Luis last update: June 24, 2008
Reply:
The average trailer coupler height is 16-19 inches. Therefore, to put yourself in that range, you'd need a ballmount that would put the trailer ball that distance off the ground. The recommended method of determining the needed rise/ drop of the ballmount is described on this informative web page. To handle your wiring, above your spare tire, there should be a socket, where a 7 and 4 way connector can plug in.
reply by: Mike
Reply:
Thanks for your answer just one more thing here I found the connector but.... my connector somehow is not as pictured in your example... in its place I found a strange 6 pin square connector (4 males, 2 female picture attached) so I think it was adapted by someone... should I just cut that and use this connector ?
reply by: Luis
Reply:
It appears that somebody tinkered with your truck before you owned it.... the connector you see there is kind of an oddball, and is pretty much obselete now. The 7-Way Pre-Wired Car Connector would work just fine.
reply by: Mike
Question:
trailer brake wiring for a 2003 Land Rover Discovery? any ideas?
asked by: Kent last update: June 23, 2008
Reply:
If your Land Rover came equipped with a factory installed tow package, you can choose a brake controller and then contact your dealer about where and how it would connect under the dash. If you don't have the tow package, you would need the controller and the Brake Controller Install Kit.
reply by: Mike
Question:
I have a boat trailer with a flat 5 connector and my 2007 Lexus RX 350 has foru wires dead ended under the floor of the hatch for a trailer hook-up. What do I need to do to hook up the fifth wire?
asked by: Richard last update: June 23, 2008
Reply:
Because of the LED taillights, you would need a powered converter to power the trailer lighting circuits. You would also need a 4 to 5 pole adapter. The adapter has the additional wire that would connect to the vehicle's back up lights.
reply by: Mike
Question:
I have a 2000 ford expedition with factory towing package. I pull a 2007 travel trailer, all the lights did work. But now I have a brake light out on the trailer. I replaced the bulb on the trailer but that did not help. All the running lights work even in that fixture but no brake light. The other brake light works fine. I took the housing srews out & all the wires are connected.
asked by: Brent last update: June 19, 2008
Reply:
Does the turn signal for that side work? If not, check the fuses under the hood relating to the tow package. There's probably a blown fuse.
reply by: Mike
Question:
i have a 4 pole round male end. i need some type of wiring diagram for it and i cant seem to find anything for it. i see plenty of 7 pole, 6 pole but nothing for the 4 way round. any info or link would be greatly appreciated.
asked by: Hotwirez last update: June 19, 2008
Reply:
The 4 pole round is essentially obselete. It's becoming less and less common, with the 4 way flat being what's typical. You can run whichever wire you wish to each pole, just make sure the female end is wired the same, so that like colored wires match up.
reply by: Mike
Question:
Hi - I have a 2003 Toyota 4Runner. It has a factory electric brake wiring harness that has the following colour wires: -black -white with black stripe -yellow with siler/grey ticks -green with yellow stripes -green with silver/grey ticks We have purchased a brake controller that has the following colour wires: -black -blue -red -white All of the guides on line dont seem to have the smae colour wires that we do. Can you please advise which colours should go with which?
asked by: Jennifer last update: June 19, 2008
Reply:
The easiest thing to do here would be to contact a Toyota dealer for assistance. If they are unable or unwilling to help, you can figure out which wire does what through the process of elimination. Using a circuit tester , test the vehicle harness wires. When you find one that has 12v with the ignition on, that is you power source, that would connect to the black wire. One will have 12v only when the headlights are on. This wire WILL NOT be used, you can just tape it off. One wire will have power only when the brake pedal is pressed, this would connect to the red wire. Of the two remaining, one will be ground (connecting to the white wire) and the other will be the output for the brake controller (connect to blue wire). You'll have to hook it up both ways and see which way will make the controller work. It's not incredibly difficlult, but might take you a little while.
reply by: Mike
Question:
My car has an existing 4 pin connector that works fine. Im going to be using a 7 pin adapter to run a pop-up trailer I still need the use of the 4 pin for my utility trailer. My question is...after reading through your Q & A bank, I get the impression that for the Aux power to charge the trailer battery black wirefrom my car to trailer I will require a 10 guage wire with 40 amp cct brkr AND an isolator connected straight to the battery on the car. Is this correct? It seems all relevant posts say that my car battery will drain without the isolator.
asked by: Darren last update: June 18, 2008
Reply:
If you unplug the trailer whenever the vehicle is not running, you will not deplete the tow vehicle battery. If this is not desirable, then an battery isolator would be needed.
reply by: Mike
Question:
I connected a 5 pin straight, wire for wire colors to colors and pluged into the boat trailer, turned the lights on from the car and no lights on the boat trailer? NEED HELP!
asked by: Lenny last update: June 18, 2008
Reply:
With the trailer disconnected, use a circuit tester, check the poles on the vehicle side of the connector. If everything checks out here, the problem is in the wiring on the trailer. Check the trailer wiring for pinched, frayed or broken wires. Check all connection points to ensure they are secure and free of corrosion. You'll also want to closely examine the ground connection on both the trailer and the vehicle side, making sure there is a tight connection to clean, bare metal. If the problem seems to be on the vehicle side of the connector, check your connections where the 5 way connector is wired into the vehicle.
reply by: Mike
Question:
All lights work on the trailerstail-marker, emergency, left turn, left brake, right turn except the right brake light. I have 2002 Dodge Ram 1500 and I have it wired according to diagram. Frustrated!
asked by: Andy last update: June 18, 2008
Reply:
If your vehicle has the factory tow package, there is an additional fuse box, usually under the hood, that has the fuses for the towing circuits. The owner's manual should explain which fuse does what. If you don't have the tow package, then double check your wiring, working from the connector back toward the vehicle, and from the connector back to the trailer. Make sure all connections are secure, and that there are no pinched or broken wires.
reply by: Mike
Question:
My 2006 Dodge Ram 2500 with 7 way and 4 way connectors. Here is the problem. Voltage readings for right side are right, 12.75 volts. Left side is only 11.14 volts. so no lights on that side. And, when the door is open with the cab lights on, it still carries voltage. Dies when cab light goes out. Could this be a factory wiring problem or am I missing something here. Sure would appreciate your input.
asked by: Heidi last update: June 18, 2008
Reply:
Is the 4 and 7 way trailer connector factory installed? If it's aftermarket and has been attached to the vehicle wiring, it appears somebody tapped into the wrong wire, which would explain why the cab lights would affect the trailer lights. I'd trace and check (using a circuit tester) the wiring running to the connector on the bumper.
reply by: Mike
Question:
I have a 2005 trailblazer the left turn signal does not work at the plug. I have checked the fuses,they are good.Are there any connections that I can check? Can you direct me to a web site for wire diagrams Thanks for any help you can give me
asked by: Steve last update: June 17, 2008
Reply:
First, check to make sure the plug wiring is all secure. Check for loose connections and corrosion. Next, make sure you checked all of the fuses. If your vehicle has the factory installed tow package, there is a separate fuse box (usually under the hood) that controls the towing circuits. Please check your owner's manual for specific fuse location.
reply by: Mike
Question:
I have a 1999 Ford Expedition,and I am towing a trailer,when I hook-up everthing works fine except I do not have any lights,my electric brake works, my turn signals work and the brake lights work.I am using a 7 way connector everthing used to work,is there a schematic that show what type of voltage I should be getting on each connector?
asked by: Robert last update: June 17, 2008
Reply:
Your vehicle has a second fuse box, that controls the towing circuits. It is usually located in the engine compartment. Please check your owner's manual for specific fuse location. The fuse for the running lights is probably blown. You should be getting 12v at the lights when they are activated.
reply by: Mike
Question:
I just hooked up a four way connector. How does one test for the brake lights? The turn signals work as well as the regular taillights, but when I test for the brake lights, I get nothing
asked by: Aurthur last update: June 17, 2008
Reply:
You don't mention the year, make and model of your vehicle, but I have a clue to what's going on. I suspect your vehicle has seperate bulbs or fixtures for the brake lights and the turn signals. If this is the case, tapping a 4 way into the circuits isn't enough. You will need a converter to transition your more complex vehicle wiring system to the simpler 4 wire system that your trailer uses. Depending on your vehicle, many of these converters will plug directly into the vehicle wiring system. If you'd care to give me some more information about your vehicle, I can suggest a converter for you. We also have a web page that has lots of helpful wiring information and tips.
reply by: Mike
Question:
I have a Dodge Durango 2000. It has a wireing 4 pole harness on it now.I would like to purchase part code #30717 -adapter 4 pole to7 pole flat socket connectorThe 4 pole plug off of the vehicle plugs into the 4 pole plug on the adapter right ? And where do the other 4 open wires connect to that are shown in the photo of part # 30717? BK,WHT,BLU ,YELLOW. tO where and how. I would need specifics.
asked by: Rich last update: June 16, 2008
Reply:
The adapter that I'd recommend for you is the Adapter 4 Pole to 7 Pole & 4 Pole. It retains the 4 way in the event that you would need it in the future, and it also includes the mounting bracket. The 4 pole would plug into your existing 4 way, the blue wire would run to a brake controller, the black would run to a 12v power source, the purple would go to the reverse lights or an auxiliary, and the white would be grounded to clean bare metal on the frame or chassis.
reply by: Mike
Question:
I just hooked up a new trailer to a 2004 Suburban. The blinkers and running lights work, but when you put on the brakes the left side rear light goes out. Ideas?
asked by: Dana last update: June 16, 2008
Reply:
It sounds like you have a short somewhere in your trailer wiring. I'd start by tracing the ground wire back from your trailer connector, and make sure its grounded securely to clean, bare metal. Then check the trailer side for the same thing. Closely examine the trailer wiring for pinched, broken, or frayed wires, and check all the connections and fixtures for corrosion.
reply by: Mike
Question:
what wire is factory at the back of a dodge truck to splice in for electric brakes on a trailer,connecting to a 7 pin round plug
asked by: Chuck last update: June 16, 2008
Reply:
The wire that feeds the trailer braking system, that would run from the brake controller to the trailer connector, is light blue.
reply by: Mike
Question:
I have a 2007 Chevrolet 3500 dually, long box and four door, it is a long truck. I also have a 20 ft cargo trailer that is probably a total of 25 ft long with the toung. I use the trailer around the Gulf of Mexico a lot and the origional wirring has pretty much corroded away. I have come back in with new wires and all joints are now soldered instead of using the crimp connectors. However it appears that over the length of my trailer and truck I am loosing a little voltage. I measure 12 volts at the tail lights but only 10 at the running lights. For background, the new wirring harness has the running lights conect to the tail light harness at the back of the trailer instead of splicing in midway the way they origionally did. My main question is would this affect the function of an LED light, at what point will it no longer turn on?
asked by: Spencer last update: June 16, 2008
Reply:
It sounds like you did it the right way this time! To track down this voltage loss, I'd recommend a few things. First, make sure that your trailer and vehicle side are properly grounded to clean, bare metal. Secondly, double check all of your connections, from the trailer connector on back, checking for pinched wires. I'd recommend the use of dielectric grease on all of your connections, including the trailer connector, to protect against water and corrosion. LED lights actually use less voltage that normal bulbs, so the drop probably insn't a big deal. Everything should still work fine.
reply by: Mike
Question:
I have a 2005 Ford 150 with no back up lights. The fuse is good location 10/20A and I replaced the back-up lamp relay coil but it was good anyway. Im getting no power to the back up lights. If its not the fuse or relay, what could it be?
asked by: Scott last update: June 16, 2008
Reply:
The fuses that manage the tow package are not located in the cab. You'll want to check under the hood, where the fuses relating to the towing functions are located. Check your owner's manual for the specific location of the fuse box, as well as a directory of which fuse controls what. You probably have a blown fuse.
reply by: Mike
Question:
Is there a seven wire set up where the brake is the center wire?
asked by: Char last update: June 16, 2008
Reply:
I'm assuming that you are speaking of a 7 way trailer connector. Typically, the center post is used for the connection of any auxillary equipment in the trailer, but you can wire each post to do whatever you wish, as long as it mates up with the corresponding post on the trailer side. The problem with wiring them differently is later down the road, if you wish to tow a different trailer, the connections won't match up correctly.
reply by: Mike
Question:
I have a small trailer with 4 way flat connector.When I have my headlights off, the break lights, indicator lights etc work fine. Side marker is off. As soon as I put the headlights on, the side markers come on but the break lights or the indicator lights on the trailer do not work. Any help would be appreciated.
asked by: Martin last update: June 16, 2008
Reply:
You may have a ground problem. In your situation, you have a ground that is strong enough to provide some lighting functions but not all. This is called a weak ground. When the taillights and brake lights are used at the same time, it creates the maximum amp load of the lights on the trailer. If a ground problem exists, it will show at this point. The places to check grounds are as follows: 1. The connector on the vehicle should have a ground wire secured tightly to a clean surface on the frame. A wire attached to the body or a surface with undercoating or rust can cause a ground problem 2. The connector on the trailer should have a wire from the connector secured tightly to a clean surface on the trailer. 3. Each tail lamp assembly at the back of the trailer also must be grounded. This is done in one of two ways. The first is by a separate wire coming from the back of each tail lamp assembly being secured to the frame. The second, and most popular, ground is achieved through the bolts of the tail lamp assembly. In this case, the lamp housing must be attached to the frame of the trailer. If the lights are mounted on wood or PVC material, the light will not recieve ground.
reply by: Mike
Reply:
I did relocate the bracket that hold the tail light to the wooden frame from the metal frame so this'll probably resolve the issue.
reply by: Martin
Question:
just got a used lowboy trailer and the breaks work if you pull the little leaver over on the break controller but when i apply the breaks for the truck the breaks on the trailer dont work at all any ideas on how to get them to work when i apply the truck breaks we checked the wireing and its all right. any ideas it would be nice.
asked by: Matt last update: June 14, 2008
Reply:
It sounds like you might have a wiring problem with your brake controller. Make sure the red wire coming out of the back of the controller is wired to the cold side of the brake switch on top of the brake pedal. You might need to use a circuit tester to verify you have the correct wire. The wire should only have power when the brake pedal is pressed. If this connection checks out OK, then you have a bad brake controller, and should replace it.
reply by: Mike
Question:
On a 2000 Ford Super duty i hooked up the wiring connecter from the camper and they brakes want to stay locked on the camper. Is there wires that i have to change?
asked by: Andrew last update: June 14, 2008
Reply:
It sounds like the blue (brake output) and black (12v) wires have been reversed somewhere. Are you using a 7 way to 6 way adapter? Make sure the appropriate wires are matching up coming in and going out of the adapter (if you are using one) or the connector.
reply by: Mike
Question:
Im trying to wire a 7-way flat pin connector to a 1990 ford f150 p/u. Does this truck come with a wiring harness or do I have to run wires? Can you give me the wiring harness color I need to connect to?
asked by: Larry last update: June 14, 2008
Reply:
Did your vehicle come equipped with the factory tow package? If so, the 7 way might be bolted to the frame member on the driver's side, behind the rear axle. You would just unbolt it, and mount it on the rear bumper. If you don't have the tow package, you would need a T 1 connector to tap into the lighting circuit and the 4 way to 7 way adapter.
reply by: Mike
Question:
I`m trying to rewire my trailer. On my rubber molded plug I have a green,red, yellow,brown,blue,black, and white. The trailer wires coming up from the rear. I have a green,yellow,brown,red,blue,black, and white. what goes where?
asked by: Phil last update: June 14, 2008
Reply:
The color coding on the molded connectors is a little different. The black, blue, and white wires all match up color for color, but the red wire on the connector goes to the yellow on the trailer, brown on connector to green on trailer, green on connector to brown on trailer, and the yellow on the connector is for the auxiliary, and would connect to the appropriate wire for that (if applicable).
reply by: Mike
Question:
Awhile back I wrote in that I was having problems getting my Jeep Wrangler to use a 6-way connector for my pwc trailer. the turn signals work fine, the parking lights work fine, but when you try to use the parking lights on with the turn signals, all the parking lights blink, and the tailights do not work properly. Also, when the brakes are applied with the parking lights on, the tailights go out and nothing comes on. I have checked the wiring and the grounds, and all is well and tight. Help!
asked by: Scott last update: June 12, 2008
Reply:
Is the ground on the vehicle side directly connected to the frame? Try running a jumper from the vehicle side ground to the negative battery pole. Then try the same on the trailer side ground. If this eliminates the problem, then you know it's a bad ground.
reply by: Mike
Question:
Your videos are great! I will bookmark this site. I plan to install a 7 wire trailer wiring kit on my 2000 Dodge Grnad Caravan. The instructions I have show that you need to disconnect the rear bumper facia to run the wires, so you can mount the plug on the hitch. Do you have any alternate instructions for running wires? Do you have any video for 1996-2000 Gradn Caravan 78 wirte installation? Please advise.
asked by: Michael last update: June 12, 2008
Reply:
Unfortunately, I don't have much in the way of alternate suggestions for mounting your 7 way connector. We have a video showing the 4 way installation on a 2004 Grand Caravan (that you've already seen), but that's the only one currently available.
reply by: Mike
Question:
I need to rewire a boat trailer to fit a 4 pin attachment. I have a 97 Nissan pickup and have already purchased and installed the pigtail. All lights blink when I hit the left turn signal, no lights blink when I hit the right turn signal. Is there a diagram out there somewhere that can help me? Note: My trailer has six lights: 1 above each wheel, 1 at each back corner low and 1 on each side set on poles to guide the boat into the trailer if the trailer is underwater. What lights are brake lights, turn signals, tail lights, etc.
asked by: Gabe last update: June 12, 2008
Reply:
If you are using the T 1 connector, and it is grounded properly, you now need to closely examine your trailer wiring. From the connection to the 4 way on the vehicle, all the way back look for frayed or pinched wires. Check for missing insulation on the wiring or corrosion. Ensure that you have grounded the system to clean, bare metal on the trailer.
reply by: Mike
Question:
My question is about the electical hook-up. Can I splice a 4-flat connector directly into the wiring harness, or do I need some kind of powered module dure to the fact that it6 haqs LED lights?
asked by: Simon last update: June 11, 2008
Reply:
Due to the multi-plex wiring system on your 2008 Rabbit, the wiring harness that you need is available from the VW dealer only. However, we do offer a trailer hitch receiver for your vehicle.
reply by: Mike
Question:
I have a 2005 Dodge Dually with the 7-pin towing package and a brake controller. I have a gooseneck Wells Fargo trailer with a 6-pin. Everything works accept the running lights
asked by: Dave last update: June 11, 2008
Reply:
The two most likely culprits are a fuse, or a break in the brown running light wire. Consult your owner's manual for the location of the fuse governing the running lights on your trailer. Usually there are separate fuses for the tow package. If the fuse is not the issue, trace the wire for the running lights from the connector back to the lights. Look for broken wires or corrosion at the connections.
reply by: Mike
Question:
I am rebuilding a utility trailer. Two wires come out of each tail light fixture yet the plug has four wires that work off the seven prong receptor. How are the turn signal and brake lights wired to the same light elementsingle wirewithout back feeding and blowing fuse of signal/brake circuit.Other fixture wire I use for running lights.I am sure there is a simple answer.1999 F-250 Super duty truck. Is there something I have to buy for this?
asked by: Robert last update: June 11, 2008
Reply:
Back feeding will not be a problem, because the converter or the tow package on your vehicle is combining these functions on a single circuit.
reply by: Mike
Reply:
Does that mean that I tie the two wires together (brake and light from the truck where they come from the 4 wire plug assemble) and connect the tied pair to the single wire at the fixture?
reply by: Robert
Reply:
I'm sorry I wasn't clearer. Each tail light (left and right) will have 2 wires running to it. Typically, the left will have a yellow (left turn) and a brown (running light.) The right will also have a brown and a green (right turn). Each light is usually grounded by its connection with the frame.
reply by: Mike
Question:
I own a 2008 Highlander non-hybrid gasoline model with two wheel drive. It does not have the optional tow prep package. What, if any lighting hook-up is available that could be installed with out splicing wires?
asked by: Paul last update: June 11, 2008
Reply:
We do have a T-1 connector available for your vehicle. This is a plug in unit, and would require no cutting or splicing.
reply by: Mike
Question:
I have a 1983 Coachmen travel trailer that when I bought it, the electric brakes didnt work. Went all last summer and a couple times this year with no problems. Coming home the other day and all of a sudden I have brakes, but when I would push on my brakes in the truck, they would stay on an not release the camper brakes. My control box stayed lit up. If I turned the blinker on to the right, it would go off, but with every blink, the trailer would brake to the blink. We had alot of rain this past weekend and Im wondering if it could be shorting out because it is wet? Also, my truck works good on my horse trailer so I know it isnt the truck. I have a 7 way round, flat pin connector on my truck and the camper is a 7 way round pin trailer connector. I have to use an adapter. Any advice would be helpful.
asked by: Trish last update: June 11, 2008
Reply:
It sounds as if you have short circuit somewhere on your trailer or in your connector. The moisture is causing a short circuit. The first thing I would do is us some dielectric grease on your trailer connections. This would prevent water from getting into the connection and causing a short. Carefully examine both the vehicle and the trailer side of the connection for corrosion. Also, examine the wiring system on your trailer, looking for pinched or frayed wires, or breaks in the insulation.
reply by: Mike
Question:
new trailer hitch. existing 4pin flat.What wires match my new 7pin to existing 4 pin to work 2000 ford expidition??
asked by: Steve last update: June 11, 2008
Reply:
Here's a guide on which wire does what in regards to your 4 way flat and the 7 way. On the 4 way, Yellow is left turn, green is right turn, brown is tail light/ marker light and white is ground. The same would apply to the 7 way, with the addition of a blue wire for the trailer brakes, black or red for a 12v to the battery, and an orange for auxillary (sometimes purple for back up lights.)
reply by: Mike
Question:
Trying to install 118176KIT on my 2005 Mazda Tribute. Cant find LT or RT wires. Found wire harness behind LR wheel with: RED under foil WHT under foil PNK/blk RED/blu GRN/yel According to http://www.etrailer.com/faq_wiring.aspx my Mazda uses GRN/yel as RT. So I tested it. A lot. Thinking that there was a particularly thin conductor in the wire and perhaps my tester was just missing it, I pulled out the wire strippers. This GRN/yel wire is *not* RT. I say this because while stripping the wire, I inadvertently broke it. And the RT signal was still blinking. Through a broken wire.
asked by: Joshua last update: June 10, 2008
Reply:
It sounds like you might have the wrong wire. You'll want to access this wiring from directly behind your taillights. You can use your circuit tester to confirm that you are making the correct connections.
reply by: Mike
Reply:
That worked great - thanks, Mike!
reply by: Joshua
Question:
1998 GMC 1500 1/2 ton pick-up Where does the factory 7 pin wiring harness terminate in the cab? The back was easy to find.
asked by: Michael last update: June 10, 2008
Reply:
They can be found in the engine compartment. The wires terminate in a bundle that is wrapped with tape. This bundle is located under the master cylinder. Follow the brake lines out of the master cylinder, and the bundle is located near where they bend to pass under the vehicle. They are pretty difficult to find. One wire is for the brake signal going back to the trailer connector, which will need to be routed into the passenger compartment and attached to the brake controller, and the other is the lead for the 12v power source. You might need to splice extra wire on to both, as there probably isn't much slack to work with.
reply by: Mike
Question:
I have a 1987 Jeep Wrangler. Iam trying to hook up my PWC trailer using a 6 way connector. My marker lights work, turn signals work, UNTIL the brakes come on. Then the taillights on the trailer go out, and the turn signals flash improperly. You guys are my last resort. Help!
asked by: Scott last update: June 10, 2008
Reply:
What you are describing is the classic symptoms of a bad ground connection. I'd start by tracing the ground wire back from your 6 way, and make sure its grounded securely to clean, bare metal. Then check the trailer side for the same thing.
reply by: Mike
Question:
I was wondering what kind of wiring system I should use for my 2006 Nissan Murano. If i should use a 4, 5, or 7 way connector and the wire colors for each thing like turn signals and etc.
asked by: Nicholas last update: June 10, 2008
Reply:
The connector you use will depend on the type of trailer that you want to tow. A 4 way is most common, this would be used on small, utility type trailers without trailer brakes. A 6 or 7 way is most commonly used for larger trailers (Probably larger than your Murano should tow) that have trailer brakes and would need an extra 12v. lead for lighting or other onboard accessories. The 2006 Murano wiring harness is available from a Nissan dealer only. This wiring guide contains a wealth of information about trailer wiring, as well as wiring diagrams.
reply by: Mike
Question:
7 flat on a 94 chevy one ton hooked to a 2005 pjs 10 ton ,,,,,, everything works untill i have the turn singnal on the touch the brakes then the turn signal fuse blows ....... what gives ?
asked by: Don last update: June 7, 2008
Reply:
I'm assuming that this problem does not exist when the trailer isn't hooked up. You have a short somewhere in your trailer wiring, that is causing a wire or one of the fixtures to ground out to the trailer frame. You'll have to trace your wires, looking for cracked or worn insulation, pinched wires, or corrosion in one of the light fixtures.
reply by: Mike
Question:
1999 Ford F250 Superduty with factory 4 wire flat plug. I am upgrading to a 7 way connector with part 118243. Looking at the distribution boxes there are 2 side by side in the engine compartment, the smaller one only holds 2 relays while the big one has combination of relays and fusesand all the relays are full. There is already a fuse in the back up light spot. But when I plugged in new harness there is no power to the middle pole back up lights. The owners manual says relay 38 but with no location diagram? Is there another relay box that I am missing? I am only using the plug for pulling a boat trailer so need the regular 4 pole functions with the addition of back up light to deactivate the brakes.
asked by: Gene last update: June 5, 2008
Reply:
You mention that the fuses are all OK. Are you testing the back up circuit for power while the vehicle is in reverse? (I know, silly question, but I had to ask!) With the vehicle in reverse, check the center pin on the 7 way for power. If you're not getting any there, check the vehicle side of the socket where the 118243 plugs in.
reply by: Mike
Question:
I am rewiring my lawn mower trailer and am having trouble with the side markers. The only wire coming out of the side marker lights I bought was a black wire no ground. When I connect this wire to the tail light wire, I dont get any light whatsoever. Am I missing a ground somewhere? Just a note about the ground: I didnt ground anything into the trailer, instead, I thought if I used attached the ground wire from the hookup from the truck, that would be fine. Do I need to ground the wire coming from the truck plug somewhere into the trailer frame? If this is the case, do I still need to connect the grounds to the ground wire on each of the taillights?
asked by: Matt last update: June 5, 2008
Reply:
The studs that fasten your marker lights complete your ground circuit. Make sure that the studs, as well as the area that they connect to, aren't corroded. Everything else that has a ground wire needs to be grounded to clean bare metal on the trailer.
reply by: Mike
Reply:
I'd like to post a follow-up question to your answer: If I run the ground wire that is connected to the truck plug-in to each light and wire each ground on the lights to the same ground wire, can I then ground the ground wire in one place on the trailer frame itself? I ask this because it seems like the grounds always end up getting corroded or fail down the road. I am using 1/2" PVC to enclose all my wiring for the trailer, so hopefully I won't have to re-wire on the trailer ever again, at least that is the plan.
reply by: Matt
Reply:
The most common way to ground the trailer wiring system is to attach the white wire coming from the trailer side of the connector to clean, bare metal on the frame. Then each fixture can be individually grounded to the frame, using the frame as the continuous ground.
reply by: Mike
Question:
brwn wire on a 4 way, d you put a brown wire on each side of you boat trailer and run them together some how? for the running lights? cause that has to be hooked up on bothsides right?
asked by: Michael last update: June 5, 2008
Reply:
You need one brown wire running to each tail light. You can either splice a line off from the front of the trailer and make a run to both sides, or run one line to one side, and then make a run to the other light, which on a boat trailer, would use less wire.
reply by: Mike
Question:
Do you have instructions on How to Install a Brake Controller on a 1995 Chevrolet Pickup? Specifically, what wires do I splice into inside my cab for the brake controller and where do I connect the center aux. & charging wires from my connector?
asked by: Rick last update: June 5, 2008
Reply:
Here are some general instructions that you might find helpful. If you'll scroll down to the lower portion of the page, there is a wiring diagram and explanation of which wire attaches where. The only exception for your vehicle would be the wire that goes to the brake switch. The wire you need to tap into is light blue in color, and located in the bundle of wires located under the steering column. You might need to use a circuit tester to make sure you have the wire that only has output when the brake pedal is pressed. The 12v lead is wired to the battery. Where the aux wire is connected is going to depend on what you want to use it for.
reply by: Mike
Question:
I am trying to wire a 4 way wire on my 99 chevy cavalier for a trailer. I dont know where to use the t-taps and how to connect the wires in my vehicle.
asked by: Kris last update: June 5, 2008
Reply:
Unfortunately, a plug in type connector is not offered for your vehicle. The 4 pole wiring harness must be tapped into the existing wiring. It's a pretty easy process, the wires tap into the existing wiring behind your vehicle's taillights. Green would tap into green, yellow into yellow, brown into brown, and the white would be grounded to clean, bare metal on the chassis.
reply by: Mike
Question:
LH Trailer Light Inop. No power @ 7-Way or 4-Way Plugs. All other Pins OK. Fuses OK. Wire Diagram confusing. Any ideas?
asked by: Rik last update: June 5, 2008
Reply:
Coming out of your seven way, the yellow wire controls the left turn signal on the trailer. Since you have no output at the 7 way when the turn signal is activated, the problem would be on the vehicle side. Trace the wire coming out of the back of the 7 way back to where it taps into the vehicle wiring harness. Look for cracked insulation, or a pinched wire or corrosion at a connection point.
reply by: Mike
Question:
I have a 1999 Dodge Ram 2500 with the factory 7-pin whos idea was it to mount the connector sideways anyway? and a Techonsha Voyager brake controller installed. With our 2003 Featherlite 3-Horse gooseneck everything works perfectly. However, on our 2 axle 2 brake flatbed trailer the brake controller will not activate no green light. A while back a friend had borrowed the trailer for some long distance load hauling and had a trailer shop upgrade the trailer wiring from a flat 4-pin to a 7 pin so he could use the brakes and brake controller previously I had disconnected the brakes because they kept locking up when hooked to Dodge thru the 4-pin setup. The 7-pin upgrade works great on his 2004 GMC Duramax and whatever controller he has. Another friend with an older Ford truck uses the flatbed once in a while and the brakes and his controller work as well. So to my question: Any ideas as to why the Tekonsha might not see these magnetic brakes? I suspected a poor ground but like I say, the other trucks work fine and our horse trailer operates properly. I was thinking it might be the controller and maybe I should just purchase a newer model. If so please recommend one for me.
asked by: Paul last update: June 4, 2008
Reply:
It sounds as if maybe either the trailer side or vehicle side connectors might be wired incorrectly. Make sure that the blue brake wire from the vehicle connector corresponds with the blue wire on the trailer side connector.
reply by: Mike
Reply:
Thanks Mike. I'll re-trace the connector wiring on both sides just to double check everything. One thing I just noticed is when stepping on the brake pedal the newly added fender marker lights come on, albeit only slightly. Hadn't thought to look there, and now an obvious huge clue to a mis-wiring. Unfortunately I was predisposed to ignoring anything really simple because the other trucks I mentioned did work. Thanks again for the assist.
reply by: Paul
Question:
I have a 2002 BNM 9900GVW 20 trailer. Recently, my truck 7 pin vehicle adapter broke off allowing the trailer cable to skim the road surface and severe two wires apart. We cut all the wires accept the black and put wirenuts on them to reconnect. The lights work fine, however I have no brakes. My slide trailer controller does not show a connected light when plugged in. Once in a while the green light will come on, but as soon as I press the brake, the light goes out. There were a few times when the light remained green while pressing the brake, but never turned orange to signify trailer brakes. I dont know what to check next to make my brakes work???
asked by: Mark last update: June 4, 2008
Reply:
It sounds like there is an intermittent connection problem in the blue wire coming from your brake controller to your 7 pin connector on the rear of your vehicle. I'd closely examine that wire for any breaks, or worn insulation. Also closely check the connection at the back of the 7 pin connector. You refer to an adapter, and I'm assuming you are referring to the 7 way connector at the rear of the vehicle.
reply by: Mike
Question:
2002 Chevy Blazer w/4way flaconnector. Plug in trailer,triedlights and lost brake and all turn signals on tow vehicle & trailer, disconnected trailer and nothing changed,afterabout 1 hour evrything came on & worked that day. Next day after driving 30 min., stopped to check lights and same thing happened, no fuses blown either time
asked by: Lenny last update: June 4, 2008
Reply:
You might want to check your owner's manual. Your vehicle might have a separate fuse panel under the hood which would control the towing related circuits. There might be a blown fuse there. If this is not the case, I'd recommend you see your mechanic.
reply by: Mike
Question:
I am going to order the Valley hitch and I already have several Ball Hitches. What I need is the electrical hook up for a simple trailer so just a 4 pin hook up would be fine. What unit do you have that I can buy so my order is over $150 and I get free shipping.
asked by: Jonathan last update: June 4, 2008
Reply:
We have a T-1 plug in wiring harness that is specifically designed for your vehicle. This item would plug in, eliminating the need for any cutting or splicing.
reply by: Mike
Question:
I am having trouble wiring a 7 pin connector on my 2005 Toyota Tacoma. In particular, I need help with the lead going to charge the coach battery and the lead to the back up lights. I have a lead going to the back up lights on the truck, and I think I can tap into that to get the back up lights on the trailer working. I do not have a lead to go to the coach battery and will have to start from scratch on that. Where can I come off of for it? Do I come off the positive lead of the battery or is there a place to come off the fuse box under the hood? Does this lead need its own relay, fuse and off/on switch? Any diagrams or directions? I do not want to fry any harness!
asked by: Arthur last update: June 4, 2008
Reply:
You are on the right track with the back up lights. The 7 way connector on the tow vehicle should have a 12v lead going to the battery, with an inline 40 amp circuit breaker. If you would like this to be a permanent installation, where you do not have to disconnect the battery when you are not driving so both batteries aren't drained, you would need a battery isolator.
reply by: Mike
Question:
I have a 1996 Toyota Tacoma and want to wire a standard 4 pin trailer connector. What do I need? Do I have to have a converter box for this truck or can I just wire the 4 pin to the truck harness?
asked by: Neil last update: June 3, 2008
Reply:
We offer a T-1 connector for your vehicle. It would simply plug in behind the tail lights with no cutting or splicing necessary.
reply by: Mike
Question:
I have a 95 Toyota 4runner that takes a 4 wire w/converter kit. Do I need to access both tail lights to install it or just one do I need to access the 2nd side for that blinker? Is one side preferable to the other? This is a first for me so any tips or suggestions would be appreciated
asked by: Paul last update: June 3, 2008
Reply:
Connecting to both sides is best. Typically, you would start on the left, then run the green over to the right side.
reply by: Mike
Question:
I just came back from France after three years, and brought back a Mecano Galva small utility trailer. I am trying to rewire it to work with my 2007 Ford Freestyle,and bought a t-connect system only 4 wires but am having sigficant problems getting the signal lights, tail lights, back up lights and brake lights all to connect and work properly. The old trailer plug was a 7 pole on the trailer and I can see how it is wired: essentially it is: LH signal lights, RH signal lights, LH Tail-lights, RH Tail Lights, Brake lights and Back-up-lights and ground.
asked by: Tom last update: June 3, 2008
Reply:
Without seeing your trailer and its lighting set-up, it would appear that you have two alternatives. First would be to rewire your trailer. This option would probably prove to be more reliable in the long run. The second alternative would be to use a vehicle to vehicle converter. The wire for the running lights would bypass (not be connected to) the converter.
reply by: Mike
Question:
Towed Vehicle: 2005 Cherokee with 7-wire connector. Trailer: Enclosed