Filter Results

Filter Questions and Answers:

reset filter

Expert Answers about Wiring


  • Will Reverse Light Circuit of Honda Odyssey Handle Powering Reverse Lock Out Solenoid
  • Reverse lockout solenoids do not draw very much amperage at all so the # 20036 attached to your reverse light circuit wouldn't be a problem.
    view full answer...

  • Multimeter Recommendation for Testing Voltage Drop of Brake Controller Install
  • You're going to want to use a multimeter like the # BTMT15 which will show exactly what the voltage is on the brake output pin of the 7-way. Otherwise without knowing what the voltage is exactly it's hard to speculate why there would be an unknown potential voltage drop. Measure the voltage near the controller like you did and on the output pin and let me know what's going on. Keep in mind that this is proportional controller so the only way you'll see full voltage on that pin is with...
    view full answer...

  • Where Does Red Wire of Trailer Wiring Kit # 119178KIT Wire to on Vehicle
  • When installing the trailer wiring harness part # 119178KIT that you have the red wire gets ran to the stoplight circuit. If your vehicle has taillights that only come on with the brakes (and not with the blinkers), that is the circuit this should run to. Another place you can find this circuit is the third brake light of the vehicle.
    view full answer...

  • Replacement Wiring Connector and Bracket for 2008 Ford F-150
  • Connector Socket and Bracket # HM40975-11998 has a pigtail harness which hard wires into your vehicle and connects to your 7-way socket; this is not normally necessary for a truck with a factory 7-way which is why it is not a confirmed fit for a 2008 Ford F-150 with factory 7-way. If you needed to hard wire a harness you would be able to use this part. Alternatively, if you simply needed new connectors you could use a plug-in option, the T-Connector Vehicle Wiring Harness for Factory Tow...
    view full answer...

  • Getting Side Marker Lights to Function as Turn Signals and Running Lights
  • Trailers use what is called a 2-wire system which means the turn signals and brake lights are on the same circuit. When you try to add separate amber turn signals you will need to separate out the brake light signal using a converter, # 118158. On this converter the yellow input wire is for the combined left turn signal and brake light. Green is for the right turn signal and brake light. White is ground. On the output side the yellow wire will be left turn signal only, green is right...
    view full answer...

  • What Type of Socket Does 4-Way Round Side of HM47043 Attach to
  • The 4-way round side of the Hopkins Endurance Flex-Coil Trailer Connector Adapter part # HM47043 that you referenced would attach to a 4-way round like the part # PK11404 and would work well.
    view full answer...

  • Trailer Wiring Adapter Recommendation for Audi Q7 Towing Trailer with LED Taillights
  • German vehicles are notorious for not liking LED trailer taillights. Typically they won't work and a bulb out sensor will go off. We have two adapters for that. If your float has a 4-way connector the adapter you'd need is the part # TR20141 or if it's a 7-way part # 20142.
    view full answer...

  • Wiring Diagrams to Use for Replacing Vehicle 7-Way with 6-Way
  • I attached two diagrams to this page. One that shows a 6-way and one that shows a 7-way. You can use that as a guide for wiring in a new 6-way like the part # PK11609.
    view full answer...

  • Wiring Adapter for 2017 Ford Super Duty with Bulb Out Sensors
  • Yes, the Tow Ready 7-Way to 5-Way/4-Way Trailer Adapter # TR20141 should correct the hyper-flashing that happens when high-efficiency LED lights are connected to a circuit that is intended for the higher power draw of incandescent lights. This should keep your bulb-out sensors from being a nuisance. In the event that this adapter does not correct the issue with your deck you can use individual load resistors at each LED light. Examples are parts # P230004C-2 and # P230004A-2. Either...
    view full answer...

  • Replacement 7-Way Trailer Connector for a 1970 Airstream Trailer
  • Bargman 7-Way Molded Trailer Wire Connector # 50-67-210 is an extension that would plug in between to vehicle end 7-Way connectors so it is likely not what you need to replace the 7-Way on your 1970 Airstream trailer. For a trailer side 7-Way with a short length of cable you can use # H20042. On it the wires have the following functions: White Wire = Ground Red Wire = Left Turn and Brake Brown Wire = Right Turn and Brake Green Wire = Tail Lights Blue Wire = Brake Power Black...
    view full answer...

  • Replacing Wishbone Connector on Trailer with Traditional 4-Way Connector
  • It sounds like the old connector on your trailer was a wishbone harness, which has two brown wires for the running light circuit (one for each side of the trailer) and the standard wires beyond that. To replace the connector with a traditional 4-Way like what you have now, you will just need to connect both of the brown wires on the existing wiring to the brown wire on the new connector. Yellow should still be for left turn/brake and green is for right turn/brake, both of which should...
    view full answer...

  • Recommended Trailer Wiring Harness for 2017 Toyota Tacoma
  • The Plug-N-Tow (R) Short Proof Powered Taillight Converter - Heavy Duty # 46365 can be used on your 2017 Toyota Tacoma and will work fine. However, I recommend a wiring harness that makes installation easier and doesn't require splicing that also draws power from the battery to protect your vehicle's electrical components. I recommend the Tekonsha T-One # 118685. This harness plugs into your factory wiring already present behind the tail lights with quick connects and then a hot lead...
    view full answer...

  • Troubleshooting 2014 Ford F-150 7-Way with No 12V Trailer Power
  • If your F-150's 7-way socket no longer delivers +12V power there are a couple of potential causes. One is the relay, of course, which can be checked and replaced if necessary. In the 2014 F-150 the relay number 9 activates the trailer tow battery charge circuit. Another possibility is simply that there could be corrosion on the contacts or trapped foreign material inside the socket. Any electrical item exposed to the elements, such as 7-way wiring that can be hit with water and road...
    view full answer...

  • Socket and Connector Recommendation for Charging Battery Bank of Trailer
  • The part # PK11852 and # PK11851 can be used for charging a trailer's battery. You would not be completing a circuit on the trailer since it's running to a battery so all you'd need to do is run the charge wire to the battery and you'd be able to charge it.
    view full answer...

  • Wiring 3-Wire Lights to Boat Trailer with Wishbone 4-Way Harness
  • It sounds like you are using a wishbone harness to re-wire your trailer. A wishbone connector has a brown/green wire for the running lights on the right side and a yellow/brown wire for the left side running lights. You will also have a yellow wire that is for the turn signal and brake lights on the left side, and a green wire that is for the right side turn signal and brake lights. The white wire, as you mentioned, is for ground. On your trailer lights, most likely the red wire is...
    view full answer...

  • Trailer LED Lights Stay on After 2016 Ford F-150 is Turned Off
  • Since you have checked all of your grounds and tried hooking up your trailers to different vehicles you already went through all of the troubleshooting steps that I would have recommended for you to go through. If your connectors are clean, your grounds are secure and connected to a clean, bare metal surface, and your wiring looks good, then there really is only one explanation. The LED lights on your trailer don't require very much power to turn on at all. Even though you have checked...
    view full answer...

  • Location of Trailer Right Turn/Stop Fuse on a 2000 Ford F-150
  • The fuse on your 2000 Ford F-150 that is for the trailer right turn and stop lights is the number 19 fuse in the power distribution block in the engine compartment. If you check in your owner's manual on page 182 you can see the exact location in the fuse box. If replacing the fuse doesn't work let me know and I can help you troubleshoot further.
    view full answer...

  • Shortest 4-Pole Trailer Connector Wiring Harness Loop
  • For a 4-pole trailer connector wiring harness loop that is 12" or 1' long, I recommend using the Hopkins 4-Pole Loop part # HM48145. This is the shortest 4-pole trailer connector wiring harness loop we offer. You can add a cover to the above harness using the Curt 4-Way Flat Wiring Connector Cover part # C58200.
    view full answer...

  • Troubleshooting 4-Way Trailer Connector without Driver's Side Brake/Turn Function at Connector
  • You have done a great job isolating the problem. The trailer wasn't the issue, so I recommend returning that to its original state as a jump wire from the right to left side will only allow the right side functions. I've attached an article to assist. Since you have determined no voltage at the truck connector, I recommend you disconnect the US Car Connector and check for the signal there as it may be a simple connection issue. If it is not an issue there, you will need to trace...
    view full answer...

  • Troubleshooting Cause for Jayco JayFlight Travel Trailer Brakes Locking Up
  • Troubleshooting the electric brakes on your 2015 Jayco JayFlight travel trailer is best done with it disconnected from your tow vehicle. There are two primary causes for the brakes to remain locked. Either there is a mechanical issue in the brake assemblies, such as damage to a component such as a spring, or there is an electrical issue that is causing power to reach the electric drum brakes when it should not. If both brakes have the same problem this tends to suggest an electrical...
    view full answer...

  • Troubleshooting Tail Light/Running Lights on 2006 Class C Lexington GTS Motorhome
  • I recommend checking your light bulbs first and then your ground connection as that is often times the issue if you have some functions and not others. You will want to make sure the ground wire is connected to bare metal and is free of corrosion or debris. If you ground connection is solid, then you will want to use a circuit tester like # 3808 to test wires and check fuses (check owners manual for locations). This will help you find a short in a wire if there is one so you can...
    view full answer...

  • How to Properly Install the Curt Converter and 4-Pole Flat Connector C59236 on a 2017 Chevy Bolt EV
  • To install the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236 on your 2017 Chevrolet Bolt EV you will need to use a Circuit Tester # 3808. You will want to probe the wires while different light functions are activated so that you can properly wire the harness. The unfortunate thing is that even if your Chevy Bolt had a typical wire color to function diagram the reality is that sometimes the manufacturers don't use the same color wiring for their vehicles....
    view full answer...

  • Wire Color Functions on the Hopkins 5th Wheel/Gooseneck Wiring Harness Part # 41157
  • In regards to the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug part # 41157: Purple - Reverse/Backup Light (Center Pin) Blue - Brake Controller Output (5 O'Clock Pin) White - Ground (7 O'Clock Pin) Red - +12 Volt Power (2 O'Clock Pin) You can see a photo of how the wire color relates to the pin positions below.
    view full answer...

  • Availability of 4-Flat Trailer End Connector
  • There are 4-flat connectors which are exactly the same as the Reese part you mentioned, though the Reese 74124 is not available. The Draw-Tite # 18004 is a 12" 4-flat trailer end connector that even comes with four wire caps for attachment. There are other lengths of 4-flat trailer connectors as well, such as the 2' Hopkins # HM48133, 4' Wesbar # W787264 or 20' Optronics # A20WB. Each of these has the same functions as the Reese 74124. I've attached links to video reviews of each product...
    view full answer...

  • Recommended Hardwiring of 7-Way Connector on a 1999 Chevy Suburban
  • Hardwiring the Hopkins 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 will work just fine for your 1999 Chevy Suburban. Some models do have the brake (blue) and hot lead (orange or red) wires already ran from under the hood to the end of the driver's side frame rail so I recommend checking into that. If they are not there, then you will want # 5506 to finish this wiring. I've attached a video of the # ETBC7 wiring that will be almost identical...
    view full answer...

  • Troubleshooting Brake Controller Function with No Display After Start Up
  • With a code of 6.1 at start up, the controller is sensing that voltage output from your controller. No code isn't a bad thing, but it sounds like your controller isn't even recognizing a trailer connection. I recommend using a circuit tester like # 3808 to test your wires going into your controller and the blue wire coming out of your controller for function. Start 6 inches behind the controller and then also check at the 5 o'clock pin position at your trailer connector. The light...
    view full answer...

  • Parts Needed to Install Brake Controller in 2008 Ford F-150 with 4-Way
  • To install a brake controller in your 2008 Ford F-150 you would be able to use the brake controller port under the dash and you will need to complete the wiring at the rear of your vehicle to the 7-way at the rear of the truck. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking...
    view full answer...

  • Adding Clearance or Running Lights to 1987 Chevy 1 Ton Dually Flat Bed
  • You can run your wires directly from your battery using a switch like # PL-SW28B if you desire, or you can simply splice into your vehicle running light circuit. I recommend using a circuit tester like # 3808 to find a wire that has power to your tail lights or near your fuse box when vehicle is on ACC or running. You can use a quick splice like # 804C to tap into that power easily. This will automatically turn the clearance lights on and off with your running lights.
    view full answer...

  • Troubleshooting 2003 Toyota Tundra Trailer Brake Light Always Hot
  • The prong next to the ground on a 4-way flat is for trailer running lights. It should give you a light anytime your vehicle is running for trailer running/parking lights. If it is activating your brake light, then there most likely is a wiring issue and that can be on your vehicle or your trailer. Since there is not a factory 4-way available for your truck model year, we know there isn't a relay issue. The brown wire is your running/park/tail lights. The yellow wire is the left side...
    view full answer...

  • Troubleshooting No Power to 12V Pin on 2017 Ford F-250 7-Way Connector
  • If you are not receiving any power at the 12V pin on the 7-Way connector, then there may be a missing or damaged fused under the hood of your Ford F-250 that is needed to activate this circuit. I took a look at the online owner's manual for your 2017 Ford F-250 and found that there should be a 30 amp fuse located in the number 27 position in the power distribution box under the hood. This is the trailer tow battery charge relay. Check to make sure the fuse is not damaged or missing on...
    view full answer...

  • Recommendation for Connecting 4-Way Flat to 7-Way Connector on Trailer
  • It sounds like you are just needing the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185. This will plug right into the 4-Way flat on your tow vehicle and provide a 7-Way to connect with your trailer. Since you are only needing to power the lights on the trailer, the additional wires can simply be tied off as they will not be needed. I have attached a short video demonstration on this product that you can also check out.
    view full answer...

  • 2006 Mercedes R Series 4-Way to 7-Way Trailer Connection Recommendation
  • The Tekonsha ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT is my recommendation for your 2006 Mercedes R-Series. This will give you a working 4-way flat. To get a 7-way connector, you would then just need to add the Hopkins Endurance Multi-Tow 4-Way Flat to 7-Way RV Trailer Adapter w/ 4-Way Vehicle End Plug # HM47180 and make sure the white wire with terminal is grounded to bare metal so your lights can work properly. Remaining...
    view full answer...

  • Trailer Running Lights Not Working After Installing New Lights and Wiring on Old Gooseneck Trailer
  • On a trailer side 7-Way blade style connector the running light wire is the one in the 11 o'clock position (if looking at the back of the connector where the wires attach). It is possibly a brown wire or a green wire but there isn't exactly a standard color code so testing the wires with a circuit tester such as # 3808 is the sure way to determine which wire is for running lights. If there is power on the running light wire but the trailer running lights do not work then it is most...
    view full answer...

  • Trailer Fuse Locations on a 2015 Chevy Silverado 1500
  • If you are looking for the fuses on your 2015 Chevrolet Silverado 1500 that are tied to your trailer wiring then those will be in the fuse department in the engine compartment. You can find this information as well as a list of what all the fuses are tied to in your copy of your owner's manual. 1 - Trailer Brake 2 - Trailer Battery 14 - Trailer Stop/Turn Lamps, Left 15 - Trailer Parking Lamps 16 - Trailer Back-up Lamp 17 - Trailer Stop/Turn Lamps, Right 64 (Relay) - Trailer Parking...
    view full answer...

  • Recommended Wiring for 4-Way to 7-Way Trailer Connection
  • The Hopkins Endurance Quick-Install Trailer Connector Adapter - 4-Way Flat to 7-Blade # HM47200 is a great start for your 7-way molded trailer connector, but you will need to not only install the 4-way trailer connector, but also make sure you have a good ground connection on the white wire with the terminal ring. This will not give you a good connection without a bare metal to metal connection on that wire. Then you can add the other 3 wires to complete your 7-way. The purple wire...
    view full answer...

  • Troubleshooting Brake Controller Connection on 2009 Chevy Silverado 2500
  • If you have the factory integrated brake controller, it sounds like it isn't seeing a connection and this is due to not having a draw on the brake controller output wire. It could be an issue with the wire at your connection or it could simply be that the connection needs to be cleaned well. The brake controller output pin is at the 5 o'clock position as you look at the controller from the back of your truck. Clean that pin and use a circuit tester like # 3808 which uses an incandescent...
    view full answer...

  • Troubleshooting No Running Lights on 4-Way Connector Spliced Into 7-Way on 2017 GMC Sierra
  • It is completely possible to have gained the functions of your turn and stop lights and tapped into the wrong wire for running lights. The wire you want to tap into for your running lights is in the 11 o'clock position as you look at the outside of the connector (or the 1 o'clock position when viewing the back of the connector. I've attached a photo to assist that includes colors, but go off of function location if the colors don't match up. If in doubt, use a circuit tester like #...
    view full answer...

  • 7-Way Adapter Recommendation to Go From Semi Truck 7-Way to RV 7-Way
  • The part # PK12-724 is designed to plug into a 7-way round connector like what your semi-truck has and provide you with a 7-way blade type connector for your RV 7-way.
    view full answer...

  • Why Don't You Want Trailer Wiring Grounding Through Hitch and Pin Box/Coupler
  • In some situations the trailer wiring will ground through the metal connection between the hitch and the trailer but this is not ideal. Instead the trailer SHOULD be grounding through the ground wire of the harness. You might try connecting the trailer to see if the additional contact helps but it really shouldn't need that. If you have ever seen a trailer going down the highway and the taillights were flickering as the trailer was hitting bumps that was a trailer that was grounding...
    view full answer...

  • Parts Needed to Totally Rewire Trailer
  • The Trailer Wiring 7-Way Upgrade Kit # ET7WK is a good place to start. It gives you a new 7-way and wiring to a junction box where you can then wire all of the circuits to. Additional hardware that you may need is 3/16 Inch Ring Terminals, # 44-5310A, 1/4 Inch Ring Terminals, # DW05702-1, 12-10 Gauge Butt Connectors, # 05732-2, 16-14 Gauge Butt Connectors, # 05731-5, and electrical tape. And finally 10 gauge wire like part # 10-1-1 which is sold by the foot and 12 gauge wire # 12-1-1....
    view full answer...

  • Is Draw Tite 20023 Long Enough for 8 Foot Bed on 1990 Chevy C/K Series Pickup?
  • The Draw-Tite 7-Way Pre-Wired Car Connector # 20023 has a 7 foot lead, which should be plenty of length to work with the 8-foot bed of your 1990 Chevy C/K Series Pickup. The directions are straightforward and not particularly lengthy; I've sent them to you so that you can determine if this is a job you want to attempt yourself. I've also added a link to a video review of this part for you to take a look at.
    view full answer...

  • 7-Way Bargmann RV Wiring Harness for Trailer Side
  • Molded 7-way trailer connectors like the Bargman # 54006-009 always have the copper because of its electrical connection properties. The way to keep them from corrosion over time is to use dielectric grease # 11755. This keeps moisture, dirt, and debris out of your connections that can lead to corrosion. This grease actually assists in the electrical connections as well, so it is a help in both ways.
    view full answer...

  • What Does Second Brown Wire of a 4-Way Trailer Connector with 5 Wires Connect To
  • What you have a is a 4-way Wishbone trailer connector like part # A35W42B. The two brown wires are both the running light circuits. One needs to ran to each side of the trailer. This makes the wiring a little easier instead of having to run the brown wire to one side and then have a jumper wire to the other side.
    view full answer...

  • Does Each Circuit of 54-77-003 Use a Single Pin to Contact Vehicle 7-Way
  • Each of the circuits that the 7-Way Connector # 54-77-003 has makes contact with the vehicle 7-way pins with a single pin. In case you were asking about how the wires connect to the connector check out the attached picture.
    view full answer...

  • Length of Hopkins Trailer Connector Adapter # 47595
  • The overall length of the adapter part # 47595 that you referenced is 12 inches. Without counting the length of the connectors though the wire portion is only 4-1/2 inches.
    view full answer...

  • Adapter to Connect RV Style 7-Way Connector on Tow Vehicle to Round Pin 7-Way on Trailer
  • Yes, the part # 47595 that you referenced is exactly what you are looking for. It will plug into the 7-way blade connector on your tow vehicle and will give you a round style 7-way for your trailer to connect to.
    view full answer...

  • Troubleshooting Trailer Light Functions Not Working and Wire Colors Not Matching
  • Sometimes companies have different wire colors, so you will need to check functions instead of color. You can use a 12V battery for this with a couple jump wires or your can connect it to your vehicle and use a circuit tester like # 3808. You can use the locations of the functions in the attached photo to assist. If you match the functions and still do not have running or tail lights, you most likely have a bad ground connection on those lights. Make sure you have a bare metal to bare...
    view full answer...

  • Troubleshooting Firestone Air Springs Compressor Not Working
  • When the Firestone air spring are not working, there are a few things you can do before taking your vehicle to a mechanic. First, I think you have narrowed it down to a compressor issue because you are not hearing it attempt to inflate. It could be a power issue or it may be an issue with the compressor itself. I recommend using a circuit tester like # 3808 to check for power from the battery to the unit and then from the gauge switch when you hit the inflate button, to see if it is...
    view full answer...

  • Troubleshooting Wiring LED Trailer Lights To Shadow 750 for Running Lights and Blinkers
  • Your bike wires will need to be tested for function using a circuit tester like # 3808. There is really no way for us to match color for color without having the complete wiring harness diagram for your bike. On your LED light, you will need to test functions using the white as a ground on your battery and then touch each one of the others to power for function.
    view full answer...

  • Brake Controller Only Works with Manual Override on a 2002 Chevrolet Tahoe
  • The fuse that you will want to check is labeled "CHMSL" and can be found in the fuse box located in the engine bay. I have attached a photo of this for you. If the fuse is still good then you will want to begin checking the the brake signal wire (usually red) coming from the brake controller ran to the cold side of the brake pedal. It is likely that this wire has become either pinched or broken. If you cannot find a loose connection then you may just want to run a new wire from the controller...
    view full answer...

  • Running Lights on 2 Trailers Not Working When Connected to a 2016 Chevy Silverado 2500
  • I will be happy to help. This sounds like an example of a corroded trailer connector either on the 2016 Chevy Silverado 2500, the trailers, or both. The first thing to do is make sure that the truck and trailer connectors are clean and free of corrosion inside, where the wires attach, and outside on the pins. Using a wire brush could work but I recommend a nylon brush such as # 814092 to avoid short two pins together. If that does not solve the problem you can use a circuit tester such...
    view full answer...

  • Recommended Adapter for 4-Way Round Trailer Connector on Motorhome
  • The Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat # ADP001 will work for your 1995 motorhome with 4-Way round. The 4-Way round trailer wiring connections carry the same functions as the 4-Way flat trailer wiring connections they are just more heavy-duty, so this adapter will allow you to capture the functions you need for your trailer. The pins will fit the dimensions you gave as that is the traditional application for a trailer connector like # PK11404.
    view full answer...

  • Troubleshooting Blown Fuses on Running Light Circuit of 7-Way Socket
  • The easiest way to troubleshoot your trailer lighting functions is when it is not connected to the tow vehicle. Apply 12V power from the truck's battery or a well-charged spare if you have in the garage directly to the contacts on the trailer plug. Direct power input to the trailer plug lets you test the trailer running/clearance/license plate light function in isolation, without any possible interaction with the vehicle. A set of jumper cables and two short lengths of 10- or 12-gauge wire...
    view full answer...

  • Vehicle Blows Fuse When Trailer is Attached
  • I would agree that the problem appears to be on the vehicle side. Generally speaking, most of the time when a vehicle's fuse blows as a result from attaching a trailer, the cause is usually attributed to either the trailers lights exceeding the vehicle's trailer lighting circuit or there is a short somewhere along the wiring harness. If you have previously pulled the trailer with the vehicle in the past then I would lean towards a wiring issue but if you have never pulled this trailer before...
    view full answer...

  • Adding a 4- and 7-Way Trailer Connector to a 2003 Ford F-150 with 4- and 5-Way Connectors
  • You won't have to replace all the wiring on your 2003 Ford F-250 to install a 7 and 4-Way connector. All you will need is # 37185. The 4-Way you have will plug into the 37185 (the 4-Way functions are retained). Then ground the white wire to the truck frame. To wire in the remaining wires you will first trace your 4-Way wiring forward under the truck where it plugs into another harness. Inside this harness there will be an orange wire and a blue wire. The orange wire will go to the 37185...
    view full answer...

  • How to Wire 7-Way Trailer Connector on 2008 GMC Sierra 3500
  • Wire colors alone are not a reliable method for connecting vehicle or trailer wiring since they are not always consistently used. There are common wire colors for certain functions, such as a brown wire for trailer running lights, but there is no guarantee that this is the wire color used on all trailers or vehicles. But since you provided the wire gauges too, that does help narrow things down. A heavier-gauge white wire will typically be ground; the other larger-gauge wires will typically...
    view full answer...

  • Trailer Wiring Recommendation for 1989 Geo Tracker
  • For trailer wiring for your 1989 Geo Tracker we have universal kits like the part # 119178KIT which are a confirmed fit. This brand is the most reliable of the options available for your vehicle though.
    view full answer...

  • How to Determine Functions of Trailer 6-Way Wiring if All Wire Colors are Same
  • You'll have to determine the functions of the wires and then wire them by function to the 6-way diagram I attached. Determining the functions of the wires can be done by you tracing the wires back to see where the terminate or you can put 12 volts on each wire to see what activates and go from there. You might use a piece of tape plus a marker to label each of the wires for the future.
    view full answer...

  • 7-Way Diagram for 7-Way of 2014 Mercedes Sprinter 3500
  • The PA66-MD40 is a standard 7-way which we have diagrams for. I attached a picture that shows how a standard RV 7-way gets wired up for you to check out.
    view full answer...

  • Recommended Adapter for 7-Way Truck to 5-Way Trailer Connection
  • For your 2012 Chevy Silverado to tow a utility trailer with 5-way connector, I recommend the 7-Way to 5-Way/4-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs # TR20141. This will give your the connection to use a 5-way or a 4-way trailer.
    view full answer...

  • Recommendation for Trailer Light LED Conversion to Prevent Hyperflashing
  • Hyperflashing can be an issue with any trailer as it converts to LED lights from incandescent bulbs. It is all dependent on the wiring of your vehicle and the trailer harness converter. The good news is there are a couple easy fixes. If you have a 7-way trailer connection, you can use the Trailer Connector Adapter w/ Lamp-Out Sensor Bypass - 7-Way RV to 7-Way RV - Vehicle End # 20142 which has an internal load resistor. The other fix is to use an external load resistor like the Putco...
    view full answer...

  • Troubleshooting Ford F-250 Combination 4-Pole/7-Way Wiring for Boat Trailer
  • With the factory-installed combination 4-pole/7-way trailer connector on your 2016 Ford F-250 there is no switch to change between the two plug formats. Both the 4-pole and the 7-way will be active at the same time and can be used together, say for example with the 4-pole connected to a light bar or slide-in camper and the 7-way handling your towed boat trailer's connection. The lighting signals that are carried on the 4-pole are the same as those included in the 7-way, so if the lights...
    view full answer...

  • Installing a Trailer Wiring Harness on a 2009 Toyota Yaris
  • Although we do not have a video for installing a wiring harness on a 2009 Toyota Yaris, I am linking a video of the Tekonsha Upgraded Circuit Protected Tail Light Converter Hardwire Kit # 119178KIT being installed on a 2007 Toyota Avalon that you can use as a reference. A link to the installation instructions have also been linked. This kit is the best one that we have to offer for your Yaris as we have found the Tekonsha brand to be very reliable and last longer than most other brands.
    view full answer...

  • Parts Needed to Bypass OEM Trailer Wiring on a 2004 Dodge Ram 2500
  • If you are wanting to bypass the trailer wiring on your 2004 Dodge Ram 2500 then we do have the parts that you need. You will want to start off by installing the Upgraded Modulite Vehicle Wiring Harness Kit # 119147KIT. This is a universal kit that will need to be spliced into your tail light wiring and have a 12V power lead run to the battery. Once installed, this kit will give you a 4-Way flat connector for your basic trailer light functions. For a fully functioning 7-Way connector...
    view full answer...

  • Installing Curt Wiring Harness In 2018 Ford F-150 With Aluminum Bed
  • I have a solution which is going to allow you to use your Curt # C56070 harness with your 2018 Ford F-150, though you will not want to use aluminum screws. Instead, you will just need the Curt Isolation Hardware Kit for 7-Way RV Plugs in Aluminum Truck Beds # C57007, which will give you just the 4 stainless steel bolts and 4 rubber well nuts that come with harness # C57008, but will not require you to purchase the entire harness.
    view full answer...

  • Troubleshooting One Running Light that Doesn't Work When Everything Else Does
  • It sounds like you have a short in that running light wire since you replaced the bulb and now the entire light fixture. I recommend using a circuit tester like # 3808 to test power on the wire coming into that light. If you don't have power, trace the wire to find the short using the tester every few feet and replace wire as needed. If you have power at that light, then the ground may need to be cleaned up from debris or rust, and possibly even moved for a better connection to your...
    view full answer...

  • Can 2018 Chrysler Pacifica Hybrid Touring Plus use Brake Controller?
  • Brake controllers can be installed on hybrid vehicles such as your 2018 Chrysler Pacifica Touring Plus, though right now it is not known if a wiring adapter can be used, so the controller would need to be hardwired in. To add a 4-way you would want the Curt # C59236 and a 7-pin can be added with the Universal Installation Kit for Trailer Brake Controller # ETBC7. For a brake controller I strongly recommend the Prodigy P3 # 90195; it is the most popular model we carry due to its effectiveness...
    view full answer...

  • Are Diodes Needed when Switching Trailer and Vehicle to LED Lights
  • You wouldn't need diodes when using Hopkins wiring harness # HM48895 but you may need load resistors on any affected circuits. When switching to LED lights you could experience hyper flashing with turn signals. In some situations, the LED lights won't draw enough power for the electrical system to recognize them. The load resistors will help with that issue, too. You can get a 2-pack of load resistors using # P230004A-2. You would need one load resistor per affected circuit.
    view full answer...

  • Troubleshooting Electric Over Hydraulic Actuator with Hydraulic Pump Constantly Running
  • With your Electric Over Hydraulic actuator (EOH) not shutting off, it appears you have constant 12V power going to your actuator from your brake controller output (normally blue) wire. I recommend checking your wire using a circuit tester like # 3808 to confirm that. If that is the case, I recommend unplugging your trailer and checking the connections on your trailer side and your vehicle side of the connection for corrosion or debris. Thoroughly clean your connections on both sides...
    view full answer...

  • Trailer Wiring Harness with 4-Way Flat Connector for 1997 Honda Valkyrie
  • First, with LED lights, the color of the bulb needs to match the color of the lens. Otherwise you will have dim lights or off-color lights. If you want you can replace just the 4-Way end on the harness that you have with # HM48190. If you want to replace the whole harness I recommend going with a powered option such as # 119190KIT which will get the power for the trailer lights directly from the battery instead of drawing it through the tail light wiring.
    view full answer...

  • Which Pin on Trailer 6-Way Carries 12 Volt Accessory Circuit
  • The center pin of a 6-way does carry the 12 volt accessory circuit like you described. The brake controller output circuit would then be the pin in the 10:00 position like what you see in the diagram attached. You should note that in some cases these two circuits are switched and are opposite of the diagram. Since this is a pretty common issue that frustrates people and you asked specifically about those two circuits on a 6-way I figured it was worth mentioning.
    view full answer...

  • Can Just Power Wire and Ground be Activated on Trailer 7-Way
  • Yes, if you only needed to connect two of the pins of a 7-way it would work totally fine as long as one of the pins was the ground like you mentioned having. As long as the ground is connected you can activate all of the circuits of the 7-way or just one.
    view full answer...

  • Parts Needed to Install Brake Controller in Vehicle that has No Trailer Wiring
  • You will need to start with a 4-way (if you do not have one). For that you would want the # 119190KIT. From there you would need to convert the 4-way to a 7-way so that you can install the P3 brake controller # 90195. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well.
    view full answer...

  • Troubleshooting a 4-Way Wishbone Trailer Connector Without Running Lights
  • Traditionally, the brown wire is the running lights. On your trailer you have a 4-way wishbone connector, similar to our part # A35W42B. With a wishbone the running light circuit is ran on two wires one going to each side of the trailer. This usually makes wiring the trailer easier. Do you have running lights at the vehicle's connector? Use a circuit tester, like part # 3808, to test each function on the back of your tow vehicle. This will isolate whether the problem is with the...
    view full answer...

  • Adding an Additional 7-Way to a Silverado with a Camper in the Bed
  • The Bargman 7-Way Super Sealed Connector with Cable # 50-87-002 is an option that you can use. You will just need to splice into the current wiring on your 7-Way. This will give you a 2nd 7-Way on your Silverado, but keep in mind that if your camper is already pulling power from your 7-Way, adding a trailer could very well overload the wiring. This could either cause the lights to not functions properly or it could cause a fuse to keep blowing. You will want to attached the following...
    view full answer...

  • Determining Wire Functions on Vehicle with 4 Wires and Trailer with 5 Wires
  • Starting with the vehicle side wiring, it sounds like you have a standard 4-Way wiring connector installed. On a 4-Way flat trailer wiring harness, yellow is for left turn signal, white is for ground, green is for right turn signal, and brown is for running lights. Then on the trailer side, it sounds like you may have a 4-Way wishbone harness, which splits the running light circuit at the connector. Most likely, the colors you mentioned have the following functions: White = Ground Yellow...
    view full answer...

  • Recommended Parts to Make a Vehicle 9-Way Connector to Trailer 7-Way Connection Adapter
  • We do not have an adapter, but you can easily make one using the Pollak 9-Pole, Round Pin Trailer Connector - Trailer End # PK12906 and the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185. On a standard 9 way, the following connections are made: White - Ground Blue - Electric Brakes Green - Tail, License and Running Lights Black - Battery Charge Red - Stop and Left-Hand Turn Signal Brown - Stop and Right-Hand Turn Signal Yellow - Back-up, Auxiliary Ground or Circuit Gray...
    view full answer...

  • Can 12 Volt Circuit on Hopkins Trailer Connector Adapter HM47053 be Used to Charge Toad Battery
  • Yes! You can provide a maintenance charge to the toad's battery through terminal A (the 12 volt circuit) using Hopkins Endurance Flex-Coil Trailer Connector Adapter # HM47053. You would just need to attach one end of a wire, # 12-1-1 (sold by the foot), to the back of the 6-Way on the toad and the other end to the positive terminal on the toad batter.
    view full answer...

  • Installation of Curt Powered 4-Pole Wiring Harness C59236 on 2017 Chevrolet Bolt EV All-Electric
  • Thank you for your purchase of Draw-Tite Class I hitch # 24956 and Curt 4-pole wiring harness # C59236, both of which are confirmed fits on your 2017 Chevrolet Bolt EV. This wiring harness is a powered/hardwired type that requires a single wire to be run to the battery along with the spliced connections required for the input signals from the car. Routing of that one power wire is often the most challenging part of the installation as it can require some creativity to find a safe and...
    view full answer...

  • Towing a Trailer with 7-Way RV Style Connector with a Semi-Truck with a Semi Style 7-Way
  • The 7-Way on a semi-truck is not the same as an RV style 7-Way and there isn't an adapter. What I recommend, instead of replacing the connector on the trailer, is to add the correct mating 7-Way on the truck. To do that you can hardwire in a 7-Way, # HM47210. For this 7-Way the white wire is ground, yellow is left turn signal and brake lights, green is right turn signal and brake lights, brown is the tail light wire, red is auxiliary power, blue is output to electric brakes, and purple...
    view full answer...

  • Installation of Hopkins Endurance 4-Pole-to-7-Way Trailer Connector Adapter HM47200
  • When the Hopkins Endurance Quick-Install 4-Pole-to-7-Way Trailer Connector Adapter # HM47200 is connected to vehicle 4-pole wiring it will pass through only those basic lighting signals unless the pigtail leads for the other circuits are connected. On this item those extra pigtail leads are as follows: blue is for connection to a trailer brake controller to deliver its output power to the 7-way to activate trailer brakes; the red wire is for the 12V auxiliary power feed and connects...
    view full answer...

  • Is 37185 Correct Adapter to Use to Install Brake Controller in 2005 Ford F-150 with 4-Way
  • Since your 2005 Ford F-150 does have the factory 4-way what you have is the correct and best way to install the brake controller. The wiring is already present under the rear of your truck for installing the 7-way as well. I attached a picture and an FAQ article that details how to use it to connect to the # 37185.
    view full answer...

  • 7-Way Trailer Wiring Diagram Recommendation to Use as Guide for Wiring Up 7-Way
  • It's frustrating, but sometimes trailer wiring colors don't always match what the standard colors are supposed to be. In those situations you have to test the wires by function with a circuit tester like part # 3808 and then wire by function to a diagram of the connector like the picture I attached.
    view full answer...

  • Recommended 5-Way Vehicle Side Connection for Boat Trailer
  • For a nice clean connection, you can use the Hopkins Endurance 5-Way Flat Trailer Connector - Vehicle End - Ergonomic Design # HM47900 to connect to your 4-way wiring and then add the reverse power lead from behind your tail light. Another option is to use the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 which has just the 5th function wire to connect to your reverse signal. This adapter simply requires less splicing. I've attached a video of this install to assist. I've...
    view full answer...

  • Recommended Plug to add Lights to Trailer Tailgate
  • In order to add lights on your trailer's tailgate that will allow you to remove it, you can use 2 Wire Loop # 9651P. What you would want to do is cut it in half and use one side for your tailgate and one side for your trailer. I've added a link to a video review for you to take a look at as well.
    view full answer...

  • 2011 Ram Trailer Wiring and Fuse Location
  • On your 2011 Ram , the brake controller pin is at the 5 o'clock position. I've attached a photo to assist with all the function locations. You can use s 7-way tester like # TR20117 to check functions. There is a fuse for your running lights and from what I could find in the online version of the owners manual, the trailer tow lamps/park lamps fuse is in cavity J14 and requires a blue 20 amp cartridge fuse.
    view full answer...

  • How to Attach a Trailer with a 3-Way Connector to a Vehicle with a 7-Way Connector
  • A 3-way trailer connector is extremely rare and they really do not make any sort of adapter that will allow you to use this trailer connector with a 7-way connector. The only option that I have for you would be to replace the 3-way trailer connector with a 4-way trailer wiring harness and then use a 4 to 7-way trailer connector adapter. It is required by law in most states that your trailer has turn, brake, and running lights therefore if your current trailer's lights do not have these...
    view full answer...

  • Only Brake Lights are Working on Trailer with All New Lights
  • It sounds like a short, ground problem, or wiring issue. There are some things you can check to determine where the issue is. First, disconnect the trailer from the tow vehicle. Then make sure that the vehicle side trailer connector is clean and free of corrosion inside, where the wires attach (if possible) and outside on the pins. Corrosion can interrupt the transfer of electricity from the tow vehicle to the trailer. Next, use a circuit tester such as # 3808 or a meter if you have...
    view full answer...

  • Can 7-Way/4-Way HM40975 be Used in Fifth Wheel Gooseneck Truck Bed Wiring Harness
  • The only way to accomplish what you are looking to do is use the part # 40167 and then swap out the 7-way that comes with it for the # HM40975. We don't sell the # HM40975 in a gooseneck 7-way configuration because most people would not also need a 4-way up in the truck bed as well.
    view full answer...

  • How to Properly Install Wiring for a 6-Way on a Trailer
  • To accurately determine what wire is for what function on your trailer side 6-Way, like part # 50-61-104, you will need to use a 12V power source and test each wire to see what it does. You can use the battery off of your tow vehicle and simple ground the negative terminal to your trailer and then connect the positive terminal to each wire one at a time. You will then want to make sure that your trailer is wired in a way that matches the functions on your tow vehicle. You can test those...
    view full answer...

  • Troubleshooting Trailer Brake Function on 7-Way Trailer Connection
  • The brake controller output wire on your 7-way will be at the 5 o'clock pin position when you are looking at the connection. The heavier gauge wire will not be an issue, but you will want to put a circuit tester like # 3808 on that pin when you hit the manual override on your brake controller to test for function. The light should get brighter as you increase the braking power using that manual slider.
    view full answer...

  • Troubleshooting Horse Trailer Lights That All Suddenly Stopped Working
  • The best way to troubleshoot your trailer lighting problem is to unplug the trailer from the tow vehicle and test each one individually. If you have a circuit tester like # 3808 or # 40376 you can test the vehicle connector to make sure the lighting signals are reaching it. If not then you know you need to check all fuses and relays related to towing and to inspect the wiring and connectors for signs of corrosion or a loose ground wire. When all lights suddenly go out at the same...
    view full answer...

  • Parts Needed to Install 7-Way on 2008 Volvo VNL 670 for Towing Fifth Wheel Trailer
  • Your fifth wheel trailer is going to have a 7-way blade style trailer wiring connector, so while the part # 119178 is the correct harness to start with you'd need to convert it to a 7-way with the adapter part # 37185. This will allow you to convert the taillight signals to a 7-way which will be easily controlled by the 2008 Volvo VNL 670.
    view full answer...

  • Troubleshooting Trailer Running Lights Not Functioning When Connected to 2012 Ram 3500
  • Based on the question you asked this from, I assume you have a 2012 Ram 3500. Let's check for power on that pin at your 7-way trailer connection first. Use a circuit tester like # 3808 and check for power on the 11 o'clock pin when your trailer is not connected. If you have power there, then the problem is either in the connection between your truck and trailer or on the trailer. If you don't have power at that pin, then check the J14 fuse for your trailer running lights with the tester....
    view full answer...

  • Troubleshooting Ultra Fab Electric Trailer Jack
  • To test your jack, I recommend first checking your trailer battery for proper charge. The lights will require far less power than the motor, so lights may come on but you still may not have enough juice to power the motor. If the battery is not an issue, I recommend running a jump wire to your motor from the positive terminal of a 12V battery. The motor will have two 12V wires because the polarity will determine extending or retracting. If the motor functions, then you know you have...
    view full answer...

  • Recommended 7-Way Connector for 2004 Chevy Silverado
  • If you are only needing to power the signal lights on your new trailer (if the trailer does not have/need electric brakes), then all you will need to use is the Hopkins Adapter 4-Pole to 7-Pole # 37185. You will simply connect the adapter to the existing 4-Way on your Silverado and it will give you a 7-Way to hook up with the trailer. The additional wire leads will not be needed. I have attached a short installation video on an earlier model Silverado that you can use for reference....
    view full answer...

  • Troubleshooting Left Side Running Lights and Turn Signals Not Working on Trailer
  • Since all the lights worked perfectly on a different trailer when hooked up to your Dodge Durango, the issue you are experiencing is almost certainly somewhere on the trailer itself. I recommend checking to make sure all of the ground connections on the trailer are made to clean, bare metal surfaces free of any dirt and corrosion. Since you recently replaced the lights on the trailer, check to make sure the assemblies themselves are grounded properly, specifically the left side lights...
    view full answer...

  • Recommended Trailer Wiring Harness for 2004 Audi A6
  • For your 2004 Audi A6, I recommend the Tekonsha Upgraded Circuit Protected Tail Light Converter Hardwire Kit with 4-Pole Connector (Includes Tester) # 119178KIT. This wiring harness will convert your trailer lights to function correctly with the running light wire (brown) and the brake/turn signal (green for right/yellow for left) and of course your ground wire (white). This harness does require power directly from your battery to protect your electrical system from overload. I've attached...
    view full answer...

  • Difficulty Locating Cold Side of Brake Switch Wire on 2004 Toyota Highlander
  • When locating the cold side of the brake switch wire on your 2004 Toyota Highlander, you will need to find the wire that only receives power with the brake pedal depressed and not during any other function. You can use a circuit tester like # 3808 to test each of the wires you mentioned in your question. I recommend starting by testing the black wire at the brake switch above the pedal. The brake switch circuit is typically found near the brake pedal in the vehicle. If you are unable...
    view full answer...

  • Wiring Harness Installation for a 2001 Volvo V70XC
  • Unfortunately I can't tell you the wiring functions of your 2001 Volvo V70XC based on color. You will need to get a circuit tester like # 3808 to determine the functions. You can simply probe the wire through the insulation and once you've determined function, use the quick splice connectors of your Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236 to connect your harness.
    view full answer...