My Vehicle:change vehicle
Filter Results

Filter Questions and Answers:

reset filter

Expert Answers about Wiring


  • Troubleshooting Trailer 7-Way Wiring With Constant Power on Lighting Circuit
  • Often when a trailer harness lighting circuit stays on continuously, even when the vehicle lights are okay and function correctly, the issue is corrosion inside the vehicle socket or the trailer plug that allows the 12V auxiliary power signal to bleed over to that other light circuit. On a 7-way wiring setup the 12V power circuit is carried on the pin at the 1-o-clock position as you view the socket on the vehicle. Please refer to the linked photo. Just next to this pin, at the 3-o-clock...
    view full answer...

  • Troubleshooting 12 Volt Power Circuit of 2009 Chevy Silverado 2500 Not Being Active
  • It's under the hood in the fuse box that's on the driver side. Pull the lid off and you'll see a fuse diagram chart. It sounds like your circuit maybe just isn't completed. If you check out the link I attached below and scroll down the underhood connections section you can see how to make all the needed connections to activate the 7-way.
    view full answer...

  • 7-Way to 4-Way Adapter Recommendation
  • Sounds like you have a 7-way like the part # PK12-707E so for a 7-way to a 4-way you would need the part # PK12716.
    view full answer...

  • Troubleshooting 5th Wheel Wire In Junction Box That Isn't Connected And Error Message
  • On your 2014 Open Range 5th wheel trailer, the color of wire unfortunately doesn't help. You will need to test the wire for function. Because you have the lighting functions, you may have a ground or reverse function. You may also have a brake that is not fully functional. I recommend tracing that wire and using a circuit tester like # 3808 to determine the function. I recommend connecting that single wire to a battery to see if you can quickly determine function.
    view full answer...

  • Recommended Truck Bed 7-Way Wiring Harness For 2015 Ford F-250 Super Duty
  • The Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole Connector - 6' Long # HM41158 will work on your 2015 Ford F-250 Super Duty, but depending on where you want to mount it may be a little short. If you want a longer harness, I recommend the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole Plug-- 9' Long # 50-97-410.
    view full answer...

  • Troubleshooting Left Stop/Turn Signals on Trailer Towed by 2007 GMC Acadia
  • You have already started the troubleshooting process to find the cause for your trailer's left-side turn and brake lights not working. Since another vehicle has no issue with this trailer this does tend to suggest that the issue is on the Acadia. Since both 4-pole and 7-way trailer wiring setups combined the left stop and turn signals onto one wire, typically a yellow one, what I suggest is that you start a close inspection of this circuit/wire at the trailer connector itself. You can...
    view full answer...

  • Trailer Wiring Harness for a 2017 Volkswagen Golf GTI
  • For your 2017 Volkswagen Golf GTI you will need wiring harness # C56373. This harness plugs in line with the vehicle tail light wiring and gets the power for the trailer lights from the vehicle battery rather than trying to pull power through the tail light wiring. Installation instructions are included and I have linked them for you on this page.
    view full answer...

  • Troubleshooting Right Running Light Not Working Properly on Trailer
  • Whenever there are lighting issues it is always best to start off by checking your grounds and connections to make sure that are clean and free of debris. If you are not getting a good signal on your vehicle side connector or if your trailer lights are malfunctioning then I can help you trouble shoot that. If your the running lights on your vehicle are acting up you will need to take it in to a shop to get it looked at as all the information I will be able to provide is that you will...
    view full answer...

  • How to Determine Which Wire is Ground and Which Wire is 12V Power for a 7-Way Connector
  • Since your 12V Power is run from the battery to the 7-Way connector, the black wire that is grounded to the vehicle will definitely not be the 12V Power wire. My bet would be that the other black wire that is run alongside the blue wire for your brake controller is the correct wire. You will want to test it with a Circuit Tester # 3808 first though to make sure that this is correct since not all wiring is the same color on vehicles and trailers. The 12V Power will need to be connected...
    view full answer...

  • Will Curt Wiring Harness # 56146 Work with LED Trailer Lights
  • Curt wiring harness # 56146 does work with LED lights on the trailer but it is not listed as a fit for your 2007 Lexus ES 350 if that is what you are wanting to put it on. The recommended wiring harness is # 118488 and it also will work with LED trailer lights. This harness also plugs in line with the tail light wiring on the vehicle so you won't have to splice into the vehicle wires for installation.
    view full answer...

  • 7-Way Wiring Function Locations To Correspond With Hopkins 7-Way Connector With LED Test Lights
  • I have attached a trailer wiring diagram to assist and have also attached a couple photos to help with location and function. It sounds like you don't have the traditional wiring colors and I'm confused as to why you have two left turn stop functions and no reverse function. The Hopkins 7-Way RV Style Trailer Connector w/ LED Test Lights - Trailer End # HM48503 will have functions that correspond with the picture attached.
    view full answer...

  • Brake-Force Brake Controller Doesn't Seem To Adjust Intensity Properly
  • It doesn't sound like you are doing anything wrong. I recommend putting a voltage meter like # BTMT15 on your brake controller output (5 o'clock pin position) at your trailer connection and testing the intensity to see if the unit is responding correctly. You can also use an incandescent circuit tester like # 3808. When you hit the manual override it should adjust noticeably fast. This will also allow you to test your adjustments without the override. To test the driving functionality...
    view full answer...

  • Installing 7-Way on 2013 Ford Explorer Towing Pop-up Camper with Surge Brakes and Electric Lockout
  • If the trailer plugs into a 7-Way then you can use # 30717 and you would just have to ground the white wire and splice the yellow wire into a reverse light wire on your 2013 Ford Explorer. The black wire is for 12 volt power (if the trailer uses 12 volt power) and will need to be run to the vehicle battery via a 40 amp circuit breaker # PK54540 and about 25 feet of wire # 12-1-1 which is sold by the foot. The blue wire you can tape up and stow out of the way. The # ETBC7 kit comes...
    view full answer...

  • Trailer Connector Adapter to Power Reverse Lock Out on Trailer with Hydraulic Surge Brakes
  • It sounds like you have a 4-way trailer connector on your 2015 Ford F-350 and a 5-way connector on the 2010 GMC. The fifth pin on the 5-way connects to the truck's reverse light circuit and tells the trailer's reverse lock out to prevent the brakes from locking up. If the Ford only has a 4-way connector it's missing this feature. You can use an adapter like the Hopkins # 47515 on the Ford and connect the extra wire to its reverse light circuit to power the fifth pin. If the Ford...
    view full answer...

  • Stoplight Signal Location for a 2015 Chevy Traverse
  • Yes, the White Wire in the # 11 position on your BCM (Body Control Module) for your 2015 Chevrolet Traverse should be the cold side of the stop light switch. You can verify this by using a Circuit Tester # 3808. This wire will only get hot when the brake pedal is pressed which shows that it is the cold side of the stop light switch.
    view full answer...

  • 7-Way Wiring Harness for 16-Foot Trailer
  • We can help you with a replacement 7-way trailer harness for your 16-foot trailer. All such items are shown on the linked page. These include plugs-only, such as # PK12706, which uses your trailer's existing wiring; pigtail plugs like # 50-67-005 that are available in many lengths; and also complete units like # 277-000141 which is a 7-way plug with cable and wiring junction box. If you are referring to a replacement 7-way socket for your 2006 Nissan Titan then you can use # C55774...
    view full answer...

  • 7-Way to 4-Way Adapter Recommendation for 2015 Porsche Macan
  • We have just what you need. For the 7-way on your 2015 Porsche Macan we have the Pollak 7 Pole to 4 Way # PK12716 which will fit your 7-way and work well. Every single vehicle side 7-way is made to the exact same dimensions which are the same dimensions the part # PK12716 is designed to fit.
    view full answer...

  • Why Would Trailer with Electric Brakes Lock Up When Vehicle is in Reverse
  • If you have a trailer with electric brakes and they are locking up when the vehicle is in reverse that means that you have a short between the reverse light circuit and the brake output circuit which is locking the brakes up. Go over the two circuits and see if you can find where they might be shorting out together and causing this problem. Electric tape like part # PTW502 can be used to insulate the two circuits. Or it could be caused by corrosion on the connectors shorting them two...
    view full answer...

  • 7-Way Adapter Recommendation for 1997 Ford F-150 with 4-Way
  • What you are in need of is the part # 37185. This plugs into the 4-way of your truck and gives you both a 7-way and a 4-way for your trailer to attach to. It also can be used for if you wanted to add electric brakes to your trailer in the future, but if not needed you just simply would need to tape up the extra wires as they wouldn't be needed.
    view full answer...

  • Wiring Adapter for 2002 Land Rover Range Rover Wired for European 7-Way
  • The European trailer wiring standard is different from U.S. trailer wiring. In Europe all lighting and other circuits are totally separate from one another. But if your Range Rover has a 7-way round connector like that on # 118710 then you can use this adapter part to convert the wiring to a U.S. 4-pole configuration. The 4-pole format carries ONLY lighting signals; it does not include provisions for the additional circuits required for electric trailer brakes, 12V trailer auxiliary...
    view full answer...

  • How to Activate Trailer 12V Circuit on 7-Way on 2014 GMC Yukon XL
  • On your 2014 GMC Yukon XL there are two wires under the hood that have to be connected to make the tow package functional, one is the power wire to the brake control and the other is the battery charge line to the 7 way connector. This is the wire that feeds the 7-way circuit on the pin at the 1-o-clock position as you view the socket. These wires are both Red/Black with eyelets on them. They are coiled up under the hood and will need to be connected to the under hood fuse box. One of...
    view full answer...

  • Parts Needed To Replace Trailer Wiring
  • When people replace wiring that is run inside a channel or frame they will attach the new wiring to the end of the wire they want to replace and pull it carefully from the other end. If you are unable to pull the wire, you can use a fish wire to try and run the wiring through the frame. This can be tough depending on the frame or channel. Another method is to run new wiring on the outside of the trailer frame. You can use a wire loom to protect the wires from being damaged. Or you cold...
    view full answer...

  • All Lights Except Brake Lights Work on Trailer
  • In order to determine why only the brake lights on your trailer are not working, I first recommend going to the vehicle side and using a circuit tester like # 3808 to test the trailer connector. You will test the pins while somebody sits in the truck and steps on the brake pedal. If you find that there is no power coming from any of the pin locations with the brakes applied, there is likely a blown or missing stop light or CHMSL fuse on the truck. If there is power coming at the connector,...
    view full answer...

  • Troubleshooting A 7-Way Trailer Connector With A 4-Way Wiring Harness
  • In order to help diagnose the problem, I would first need you to check that both trailer connectors are properly wired. You can do this by using a circuit tester such as the Quickee Circuit Tester part # 3808. You will then need to have a friend sit in the vehicle and perform each of the trailer connectors functions while testing the corresponding wires for each circuit on the back of the vehicle's 7-way connector both before and after the plug. If you have power to all wires before...
    view full answer...

  • Will Wiring Adapter # 20142 Prevent Hyperflashing of Taillights on Cargo Carrier of MB Sprinter
  • Yes, the part # 20142 has load resistors built into them to allow them to prevent hyper-flashing that is caused by LED trailer lights. Or in your case cargo carrier lights.
    view full answer...

  • What is the Difference Between the Hopkins and Tekonsha Wiring Kits for a 2007 Subaru Outback Wagon
  • Really the only difference between the Hopkins Active Tail Light Converter with Install Kit # 46255 and the Tekonsha Upgraded Circuit Protected ModuLite with 4 Pole Harness and Hardwire Kit # 119179KIT is that the Hopkins kit comes with Dielectric Grease and the Tekonsha comes with a Circuit Tester. The actual parts that you get with these 2 options is essentially the same. I do however recommend the Tekonsha kit over the Hopkins kit because we have found that out of all of our manufacturers...
    view full answer...

  • Turn Signal Wires Are Reversed When Connecting Coleman Camper To Tow Vehicle
  • It sounds like the wires attached to the trailer connector are wired incorrectly. You will want to use a circuit tester like part # 3808 and test the wires on your vehicle side connector first. Then use a 12V battery and test the wires on your camper. I am certain you will find the wires on one of the trailer connectors is incorrect. You will just need to change the wires at the back of the connector.
    view full answer...

  • Where Does Trailer Wiring that is Brown/Yellow and Brown/Green Attach on Trailer with Solid Brown
  • You do have the wishbone trailer wiring setup. What that means is that if you have a solid brown wire it attaches to the brown and green wire as well as the brown and yellow wire. Yellow goes to left stop/turn, green goes to right stop/turn, and white is ground.
    view full answer...

  • What Gauge Wire does 4-Way Trailer Wiring Use
  • Typically 4-way wiring consists of 18 and 16 gauge wires. For a 4-way that has all 16 gauge wire you would want the Wesbar 4-Pole Flat Connector # W787264. The part # HM38138 uses 18 gauge for all wires but the white that uses 16 gauge.
    view full answer...

  • Connecting a Trailer with a 4-Way Connector to a Tow Vehicle with a 7-Way Connector
  • What you need is a 7-way to 4-way trailer adapter like # PK12716. It'll convert the 7-way on your tow vehicle to a 4-way so you can plug in your trailer. Another option is to cut off the 4-way on the trailer and install a 7-way like # H20046. You won't need to use the 3 extra wires but you'll be able to connect to your tow vehicle and not have to worry about an adapter.
    view full answer...

  • Troubleshooting Trailer Running Lights that Stop Working When Connector is Completely Connected
  • Most likely you need to clean the connector on your tow vehicle and on the trailer. One or both of them is likely corroded causing the issue when you fully connect the two together. It also could be a loose pin on either connector. You'll need to inspect them and inspect the wiring going into the back of each connector. If you still can't solve the problem let me know what you have found and we'll keep troubleshooting.
    view full answer...

  • Recommended Replacement Trailer Connector For Using 7-way And 4-way Simultaneously
  • On your 2012 Ram 3500 SRW Crew Cab with factory brake controller, you can use the Hopkins Endurance Multi-Tow Trailer Connector Adapter - 7-Way to 6-Way, 5-Way or 4-Way # HM47570. This will allow you to use both functions simultaneously. If you want to use a 7-way and 4-way simultaneously, I recommend replacing your side by side trailer hitch connector with the Hopkins Endurance Multi-Tow 7-Way RV and 4-Way Flat Trailer Connector - Vehicle End # HM40950 which will plug into your factory...
    view full answer...

  • Troubleshooting Wiring Harness on a 2001 BMW X5 Where Brake Lights Wont Work with Running Lights
  • Multiplex wiring like on your 2001 BMW X5 can get pretty confusing. A lot of times there are multiple wires that have multiple functions so it's best to test every wire for each function. I've linked a video of the # 119190KIT wiring harness being installed on a 2003 X5 and you can see where the installer finds two wires each have both the brake and the running lights signals on them. However, the voltage is different one having higher voltage for the brakes and the other a higher voltage...
    view full answer...

  • Could Truck Battery Overcharge Trailer Battery While Towing
  • The amount of amperage your truck battery could put on your trailer battery would not be enough to overcharge it. With battery setups like this what happens when they are connected is that they both try to find an equilibrium where they are both the same voltage. If somehow the truck battery did fully charge the trailer battery it wouldn't damage it.
    view full answer...

  • Troubleshooting Trailer LED Lights Not Working When Hooked Up to a 2012 Mercedes-Benz GL450
  • The LED bulbs on your trailer draw very little power and the Lamp-Out sensor in your 2012 Mercedes-Benz GL450 sees this as a bulb that is about to go out. To solve this problem the # TR20141 adapter has resistors to simulate more power draw. The other solution is to install load resistors like # P230004A on the lighting circuits.
    view full answer...

  • How to Determine Which Functions on a Trailer Match up With Which Wires on a Motorcycle
  • If you are looking at a trailer 7-Way, like part # H20046, the Black wire is typically used for 12V Power while the Red wire is typically used for the Left Turn/Stop signal (see attached photo). With that being said, not all manufacturers use the same color wiring. You will want to use a Circuit Tester # 3808 to ensure that the functions that you are matching up are correct. You can use the tester to see what wires from your motorcycle perform which functions and then a 12V battery...
    view full answer...

  • How do Two 6 Volt Batteries Wire on a Motorhome for 12 Volts
  • There are two ways to wire up 6 volt batteries depending on what output voltage you are looking for. If two batteries are wired in parallel, the positive terminals of each battery will be connected together, as will the negative terminals. Assuming both batteries are 6 volt, you'll have a 6 volt output but there will be more capacity. If the batteries are wired in series, the positive terminal of one battery will be connected to the negative terminal of the other. This would double...
    view full answer...

  • How to Identify The Wires On 2006 Chrysler Pacifica When Installing Trailer Wiring Harness
  • Since auto manufacturers can use different color wires at any time I cannot tell you what color wires are used for your 2006 Pacifica. But I can help you out. I recommend using a circuit tester like part # 3808 and test the wires on your vehicle by function. Have someone sit in the driver seat and run through the functions while you test the wires at the back of your vehicle. Per the chart in the helpful article I have attached, the typical wire color for Chrysler vehicles is Brown...
    view full answer...

  • Trailer Lights Do Not Work When Vehicle Headlights Are Turned on
  • The issue you are having with the tail lights on your trailer are most likely due to a bad ground. Other lights like turn and brake lights will only draw power when the functions are used but tail lights draw more power and that is when the problem comes up. Inspect the ground on your trailer connector and make sure it is secured to clean bare metal. Check the lights also to see if they are grounded from the main trailer ground or through their mounting hardware. Clean any corrosion...
    view full answer...

  • How to Wire Optronics Tail Lights With Three Wires When Trailer has Four Wires?
  • To figure out how to wire your new Optronics lights you will need to determine the functions of your 1982 Prowler's wires with a circuit tester such as # ALL640595. The ground wires are likely white, but we can't otherwise go by color scheme because you have an uncommon color pattern, which you can see in the help article on wiring I linked for you. What you'll want to do is hook up your trailer to a vehicle and have somebody engage the tail, turn and brake lights while you use the...
    view full answer...

  • What is the Correct Wiring Kit for a 2007 Toyota Highlander Hybrid With no tow Package?
  • The wiring you would need is the Upgraded Circuit Protected ModuLite with 4 Pole Harness and Hardwire Kit, # 119179KIT. This package has been confirmed to work with your 2007 Toyota Highlander Hybrid without a tow package. I have included links to a review and install of this video for you to take a look at.
    view full answer...

  • Parts Needed to Convert a 4-Way on a Trailer to a 7-Way
  • Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. 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...
    view full answer...

  • Solution for Range Rover When 7-Way Adapter for German Cars 20142 Does not Work
  • We have heard before that for some Range Rover owners the part # 20142 did not work like it should. In those situations we have to recommend installing load resistors on the trailer lighting circuits so that the correct load is seen for the vehicle. For that we have the part # P230004A-2 which includes a pair of resistors.
    view full answer...

  • Replacement 5-Way Recommendation for Trailer
  • For a replacement 5-way for a trailer we have the part # HM47910 which is a 5-way that comes with 18 inches of wire length.
    view full answer...

  • Parts Needed to Install 7-Way Trailer Connector on 2008 Land Rover LR2
  • To install a 7-way on your 2008 Land Rover LR2 you would need to start with a 4-way. That will provide the turn signal functions and then you can use a 7-way adapter to convert it to the style of connector you need. For the 4-way you would want to start with the part # 119179KIT which is a universal wiring harness that's been tested as a fit for your vehicle. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way....
    view full answer...

  • Is the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole a Solid Piece or Can it be Taken Apart
  • You can most certainly disconnect the wiring at the rear of the Adapter 4-Pole to 7-Pole and 4-Pole # 37185. This 4-Pole to 7-Pole and 4-Pole adapter can also be found in our Universal Installation Kit # ETBC7 along with the additional wiring and other parts needed to add a 7-Pole (or 7-Way) connector to your 2016 Ford F-150 if it just has the 4-Pole. I have attached videos of both of these products being installed on two similar 2013 F-150s.
    view full answer...

  • Trailer Connector Extension to Make it Easier to Plug in Trailer to 2014 GMC Truck
  • To make it easier to reach the 4-way connector on your 2014 GMC we have a 4-way trailer connector extension by Hopkins that's 1 foot long, # HM48144, or 2 feet long, # HM47004. Both of them plug into the existing 4-way and just extend it further out from under your truck's bumper. You can leave the extension plugged into the truck and use the included terminal grease to help protect it. It can also be mounted under your truck using the Mag-Flat # 38095 for storage.
    view full answer...

  • How to Install Tow Ready 4-Pole to 5-Pole Trailer Wiring Adapter 20036
  • Tow Ready 4-Pole to 5-Pole Trailer Wiring Adapter # 20036 is exactly what you need to allow your Honda Pilot with 4-pole trailer wiring to operate the reverse lockout feature on your trailer coupler. All you need to do is find a taillight wire that carries the reverse light signal. You can do this by tracing the wire to the reverse light bulbs or by testing the wires with a circuit tester like # ALL640595. Once you find the reverse light wire simply install the extra pigtail lead included...
    view full answer...

  • Recommended 6-Way to 4-Flat Adapter for Towing Trailer Behind Itasca Motorhome
  • In order to take the separate brake lights and turn signals from your Itasca Motorhome and convert them to the combined circuits for your trailer, I recommend using the Tekonsha Upgraded Circuit Protected Tail Light Converter # 119178. This will be powered by the battery and will install before the 6-Way trailer connection. You can then simply use a 6 Pole to 4 Pole adapter like the Pollak # PK12717 to connect with the trailer. I have included an image that shows the wiring locations...
    view full answer...

  • Is Hopkins Trailer Connector Compatible With Pollak 7-Pole RV Socket
  • Yes, the Hopkins Endurance 7-Way RV and 4-Way Flat Trailer Connector # HM40920 will work with the Pollak Replacement 7-Pole RV Socket # PK11998. This will give you a working 7-way and 4-way trailer connector. When working with electrical connectors I recommend using dielectric grease like part # 11755. This keeps dirt and moisture out of the electrical connections and helps prevent corrosion.
    view full answer...

  • Recommended Trailer Wiring Harness For 2011 Chevrolet Malibu LTZ
  • The wiring harness I recommend for your 2011 Malibu LTZ is the Tekonsha # 119179KIT. Installation of this harness requires hardwiring. The kit includes a circuit tester that helps you identify the wires behind the tail lights. If you need a trailer hitch for your Malibu I recommend part # 36479. This is a Class ll hitch and it has a 1-1/4 inch receiver opening. The drawbar I recommend is part # 36065. This drawbar has a 5 inch rise and uses a hitch ball with a 3/4 inch shank...
    view full answer...

  • Troubleshooting Brake Controller that Only Works with Manual Override Lever
  • Sounds like the problem is on the stoplight circuit wire. This wire (red in color) attaches to the stoplight circuit of your tow vehicle and is what tells the controller the brakes are being applied and to start applying the trailer brakes. Check the condition of the connection of the red wire of your controller. It may not be making a secure connection, or it's not installed on the correct circuit. Use a circuit tester like part # 3808 to test to make sure the circuit it is connected...
    view full answer...

  • Adapter Recommendation for Converting 4-Way of 2012 Toyota Highlander to 7-Way
  • The part # 37185 is exactly what you want. To convert a 4-way to a 7-way this is the only adapter you'd need. The extra wires of the harness would just need to be taped up and out of the way as all you'd need to do is plug the 4-ways in together and you'd be set. The 47185 was an older version of the 37185 and that's why you don't see it as an active part number on our site.
    view full answer...

  • Troubleshooting Trailer Battery that Drains While Towing
  • Some trucks do need additional parts in order for the 12 volt pin on the 7-way trailer connector to provide power to the trailer. To test the pin in the 1 O'clock position on your 2017 Honda Ridgeline use a circuit tester like our # 3808. Also check the fuses in your Ridgline. I used an online version of your owner's manual and found a trailer fuse in cavity 11 in the engine compartment fuse box. Check your printed copy to be sure.
    view full answer...

  • Parts Needed to Install Prodigy P3 90195 Trailer Brake Controller in 2001 Toyota Tacoma
  • We can help you install new trailer wiring to allow use of a trailer brake controller like the Prodigy P3 # 90195, which is an excellent choice for its flexibility and proven reliability. You mention you want a 6-way trailer connector - which we can help you with - but since most applications these days use a 7-way I suggest that to confirm you refer to the linked article on trailer wiring that shows you both 6-pole and 7-way connectors. This will just help you verify which installation...
    view full answer...

  • Recommended 7-Way Wiring Harness For 2000 Sundowner Horse Trailer And 2013 GMC Sierra 3500 Dually
  • For your application, I can absolutely give you the wiring function locations. I've attached a picture to assist. Based on what you mentioned, I think I have a better option for you. I recommend the Epicord 7-Way Molded Trailer Plug with Junction Box - 10' Long # 277-000141. This will allow you to connect your wiring at a junction box using the ring terminals like # 44-5310A, and then uses a molded plug so you won't have the disconnection issues as you plug and unplug your 2000 Sundowner...
    view full answer...

  • Converting a Trailer with a European 7-Way Connector to Fit a US Trailer Connector
  • We don't carry an adapter from a European to a US 7-way trailer connector. Instead you'll need to convert the connector on the bike carrier to a US 7-way using something like # 54-67-525. Or if the 2015 Jeep Grand Cherokee has a 4-way as well you can use # HM48114. With either option it'll need to be wired by function. I've linked an article on trailer wiring that might be helpful. I would connect each wire on the bike carrier to a 12-volt battery to identify the function of each...
    view full answer...

  • How To Tow A 2-Wire Trailer System With A 3-Wire Vehicle System
  • In order to tow a trailer that has a 2-wire lighting circuit with a truck that has a 3-wire lighting circuit, you will need a converter box system such as the Upgraded ModuLite Circuit Protected Vehicle Wiring Harness with 4 Pole Trailer Connector part # 119179KIT. This will allow you to use the 3-wire system on your vehicle with the 2-wire system on your trailer. If your trailer has a 7-way connector, you will also need to install an adapter such as the Adapter 4-Pole to 7-Pole and...
    view full answer...

  • Does 12V Power Feed on Vehicle 7-Way Remain Active at All Times
  • Vehicle 7-way trailer connectors include a 12V auxiliary power feed for the trailer that may remain on at all times, or be controlled by the position of the ignition key. This varies by vehicle make and model and how that circuit was wired. Some people may want that circuit active at all times, depending on their application. You just want to keep in mind that as long as your trailer is plugged in to the vehicle socket anything on the trailer that wants to draw power from the vehicle...
    view full answer...

  • Installing 4-Way Trailer Connector on 2000 Dodge Grand Caravan
  • Your 2000 Dodge Grand Caravan uses a separate wiring system, meaning that the brake and turn signals are sent along separate wires. Because of this, a converter is required and you will not be able to use the Hopkins Wiring Harness with 4-Pole Flat Trailer Connector # HM48035 referenced in your question. To install a 4-way connector on your Grand Caravan, I recommend using the Tekonsha T-One Vehicle Wiring Harness # 118334. This includes the needed converter and the T-One connector will...
    view full answer...

  • 7 way Flat to 7 way Round Adapter Recommendation
  • We have the Brophy adapter part # F77R which goes from a flat 7-way on a vehicle to a round 7-way on a trailer. I don't know what vehicle you have so I can't recommend a way to install a brake controller but we can recommend a controller. 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...
    view full answer...

  • Adapter Recommendation to Convert 4-Way of 2015 Ford F-150 to 7-Way
  • To convert the 4-way to a 7-way will require the part # 37185. The 4-way would basically just plug into this adapter and you'd have the taillight functions done. If at some point you need to install a brake controller check out the help article I attached on this for more info as well.
    view full answer...

  • Trailer Wiring Harness for 1999 GMC Sierra 1500
  • Since you don't already have a factory connector on your 1999 GMC Sierra a 4-way trailer connector will need to be hardwired in. I suggest using the Tekonsha # 119147KIT. It includes all the wiring and connectors you'll need. It also includes a circuit tester so you can find the correct wires to connect the harness to. The wiring on your truck will need to be probed to find the correct functions to connect into.
    view full answer...

  • Installing a Trailer Connector on a 2004 Dodge Ram
  • Vehicles manufacturers rarely have or use any type of standard wire color code. The only way to be sure you have the correct circuit to install a trailer connector is to do it by function. You'll need to test each wire using a circuit tester like # 3808.
    view full answer...

  • How To Determine The Correct Brake Signal Wire When Installing A Brake Controller
  • Unfortunately we do not have access to the correct brake signal wire you will need to use for a brake controller installation on a 2015 Subaru XV Crosstrek. However, I do have a way that will allow you find this fairly easy. In order to find the correct brake signal wire behind the dash on you vehicle, you will need a circuit tester such as the Quickee Circuit Tester part # 3808. Once acquired, you will need to depress the brake pedal and test each of the wires running to the brake...
    view full answer...

  • Choosing The Correct Stop Light Switch Wire On A 2011 GMC Sierra
  • It may be possible that the red wire coming from the brake controller is spliced into the wrong circuit or has become loose. The first thing you will want to do is ensure you have the red wire spliced into the stoplight switch on the vehicle's wiring harness which is the light blue or orange wire. The black wire running from the brake controller will need to be connected to the red wire on the vehicle's wiring harness. The blue wire coming from the brake controller will need to be tied...
    view full answer...

  • Troubleshooting Trailer Lights Do Not Work When Vehicle Headlights Are Turned On
  • It sounds like you either have a ground issue or a short in the wiring. A ground issue will usually show up when additional draw is put on the system. With the headlights on and then using the turn signal would be a typical situation like that. You will want to make sure each light has a ground wire running to the trailer main ground or is grounded through the mounting hardware and has no sign of corrosion. A short can be caused by a corroded or dirty trailer connector. You want...
    view full answer...

  • Recommended Trailer Wiring and Hitch Mount Cargo Carrier for a 2018 Honda Odyssey
  • The wiring kit that I recommend and is a confirmed fit for your 2018 Honda Odyssey is the Tekonsha Upgraded Modulite Vehicle Wiring Harness Kit with 4 Pole Trailer Connector # 119147KIT. This will need to be spliced into the wiring that is behind your tail light housing and then a 12V power wire run up to your battery. I have attached a video of this kit being installed on a 2013 Buick Enclave that you can use as a reference. Unless you purchase a cargo carrier that is more of a cage...
    view full answer...

  • How To Troubleshoot A Faulty Right Turn Signal Wire
  • The first thing you will need is a circuit tester such as the Quickee Circuit Tester part # 3808. Once you have a circuit tester, go to the rear of the vehicle and locate your trailer connector. Have a friend sit in the vehicle and activate the right turn signal. Test the wire for the right turn signal/brake light just before the connector on the vehicle to see which wire is responsible for this function. If the light on the tester does not illuminate, the problem is on the vehicle side...
    view full answer...

  • Troubleshooting Trailer And Tow Vehicle Wiring When Trailer Lights Are Malfunctioning
  • First I recommend using a circuit tester like part # 3808. Have someone run through the functions while you test the pins on the trailer connector of your vehicle. If everything checks out you will want to move to the trailer and check it out. It sounds like a ground problem on the trailer is what is causing your lighting problem. You will want to check that the white ground wire on the trailers connector is properly grounded to a good, clean area of bare metal on the frame. You...
    view full answer...

  • Recommended Trailer Wiring Harness to Fit 2016 Infiniti QX60
  • The wiring harness that will fit your 2016 Infiniti QX60 depends on if you have tow package or not. If you do not have the tow package you'll need one of the universal hardwire options. I recommend the # 119190KIT. It works on a variety of vehicles, with all sorts of wiring types, and trailers with different types of lights. This will provide you with a 4-way trailer connector. If you need a 7-way you can then use our # ETBC7 kit to convert it. If your Infiniti has the factory...
    view full answer...

  • 7-Way Wiring Kit to Upgrade Trailer Wiring on 1999 Viking Pop-Up Camper Trailer
  • Since your Viking pop-up camper trailer's wiring is of a different format than the standard 7-way on your 2017 Chevrolet Silverado 1500, which has a 4-pole and a 7-way combination connector, the best long-term solution is to wire in a new 7-way male plug on the trailer using a kit like # ET7WK. This kit includes the 7-way plug and cable, a wiring junction box and all connectors required to update your trailer to the modern 7-way RV format. The Jayco 6-pole square connector type, which...
    view full answer...

  • Troubleshooting Trailer Running Light Signals from 2015 Ram 2500
  • Since you have changed out any blown fuses related to trailer lighting in your 2015 Ram 2500 I suggest you test the truck wiring without the trailer connected. This will help you isolate the problem to either the vehicle or trailer side. Please refer to the linked photo (and article on trailer wiring) which shows the function carried on each pin of a 7-way vehicle socket. Running light power is carried on the 7-way contact at the 11-o-clock position as you look at the socket from the...
    view full answer...

  • How is the Curt Powered Tail Light Converter Installed on the Vehicle
  • The Curt Powered Tail Light Converter, # C56190, will wire directly to your vehicle's battery. The 12 volt wire will be used to power your trailer lights rather than running off your car's lighting circuit and causing strain on you vehicle's lighting circuit. The wire kit will include a fuse holder and 10 amp fuse that will be wired inline from the battery to the converter. The attached diagram shows the typical installation for the Curt Wiring Harness, C56190.
    view full answer...

  • 7-Way to 4-Way Adapter Recommendation for Land Rover Discovery
  • Wire colors don't always match what they are supposed to as a lot of manufacturers use their own guide which isn't the same as the standard. Especially on 7-ways since the wires aren't normally seen. If your 7-way is a factory 7-way that hasn't been tampered with I would assume that the wiring is to the standard that most 7-ways are. The part # PK12716 is a 7-way to 4-way adapter that will plug in and give you a functioning 4-way then.
    view full answer...

  • Does 7-Way part # 30717 Fit in Mounting Bracket part # 18156
  • Yes, the 7-way part # 30717 that you referenced is going to fit the # 18156. Both of these are setup for the standard 7-way mounting bolt patterns so they would work great together.
    view full answer...

  • Troubleshooting Trailer Running Light Circuit that Doesn't Activate with 12 Volts to Lights
  • I would try improving the ground like you mentioned. Ideally you would run the ground wire from the light assembly all the way back to the main ground circuit of the trailer harness. Doing this or even finding a better spot to ground the wire should solve the problem.
    view full answer...

  • Parts Needed to Convert 4-Way to 7-Way on 2016 Subaru Outback Wagon
  • If your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. 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...
    view full answer...

  • Brake Controller Not Receiving Power
  • In order to determine the problem based upon the information you are receiving from a brake controller tester such as the Curt Trailer and Brake Controller Wiring Circuit Tester part # C51498, I would need to know the make and model of the tester you are using. If you can provide me with this information then I would be glad to help. Although I cannot confirm the error message you are receiving from the brake controller tester, I can however offer my input as to the general cause of...
    view full answer...

  • What is the Diameter of Mighty Cord 6- to 4-Way Adapter A10-7264VP
  • I went out to the warehouse to measure the diameter of the round part of Mighty Cord adapter # A10-7264VP. It has a diameter of 1 inch. Since your motorcycle has a 6-Way connector check to see if the brake lights are combined with the turn signals or if everything is on its own circuit. Use a circuit tester such as # 3808 or a meter if you have one and see which pins have power with the brake lights on and each turn signal on. If they are combined then there isn't anything else you...
    view full answer...

  • Trailer Wiring Recommendation for 2017 Hyundai Santa Fe
  • For your 2017 Hyundai Santa Fe if you didn't have the factory tow package you would need a universal install trailer wiring harness like part # C59236. If you did have the tow package the correct harness fit you would need is the # 118269 which I attached an install video for.
    view full answer...

  • 7-Way Adapter for Towing Trailer with Surge Brakes with 2003 Toyota Tundra
  • Since your 2003 Toyota Tundra has a 4-way already what you need to convert to a 7-way and activate the reverse light circuit is # 37185. With this adapter you would just plug the 4-ways in together and then would run the reverse light circuit of the adapter (purple wire) to a circuit that carries voltage when the vehicle is in reverse. Normally you just tap into the power circuit of the reverse light and you'd be good.
    view full answer...

  • Running Lights are Not Working
  • Without know the year/make/model of your vehicle I won't be able to tell you exactly where the fuse panel is, but generally there is a fuse panel under the hood and then another one on the inside of the vehicle on the driver's side. You should be able to find a list of what fuses are for which functions in your owner's manual (if you don't have a physical copy you should be able to find one online). You will also want to check the grounds and connectors on your vehicle and trailer to...
    view full answer...

  • Troubleshooting Trailer Lights that do Not Work Using a 7-Way to 4-Way Adapter
  • Start by using a circuit tester like # 3808 to test the functions on the 7-way connector at the back of the vehicle. If all checks out do the same with the 4-way adapter plugged in. If you now there's a problem it's the adapter. If there's still no problems here then you know the issue is on the trailer. If you had a problem at the 7-way when you first tested it then you know the issue on the vehicle. Also, make sure each connector, vehicle, adapter, and trailer is clean and free of...
    view full answer...

  • Installing a 7-Way Trailer Connector with Test Lamps and Wiring for an Electric Brake Controller
  • Instead of using the # ETBC7 kit you can use the Curt Adapter # C57674 with wiring # 5506. The wiring provides basically everything in the # ETBC7 except for the 7-way trailer connector itself. One thing to be aware of is some electric brake controllers will sense a trailer is connected all the time when using a 7-way that has test lights like the Curt. Because of this I recommend making sure you have a high quality brake controller like the P2 # 90885 or P3 # 90195.
    view full answer...

  • Trailer Connector Compatibility When Using Adapters
  • The Hopkins Endurance Metal Trailer Connector part # HM48510 is a trailer-side 7-way plug that mates with a 7-way vehicle socket, such as # 37185. If your goal is to re-wire your trailer's 4-pole or 5-pole flat type connector then this part will allow that, but you will need to wire the trailer for the additional circuits in a 7-way configuration in order for them to be active. Changing the connector alone does not add circuits to the wiring set-up. Installing the Hopkins part on 4-pole...
    view full answer...

  • Troubleshooting Turn Signals Not Working on a 4-Pole Setup
  • The first 2 things that you want to check when experiencing wiring problems is all of your grounds and the connectors on both your tow vehicle and trailer. You will want to make sure that the grounds are secure and have a metal-to-metal contact. Sometimes even some paint can cause lighting issues. To replace a damaged connector on your trailer you will need part # HM38138; for your tow vehicle you can use part # C58044. If all of that looks good then you will want to test the wiring...
    view full answer...

  • Trailer Brakes Lock Up When Brake Pedal Is Pressed
  • The first thing I recommend is to check the gain setting on your brake controller. There should be a dial or button that lets you reduce the brake intensity. If your manual override works correctly and your gain is set to the right level then there may be a short in the wiring for the brake output circuit. You want to check the wiring on your truck and also on the trailer and look for any signs of corrosion, pinched, or damaged wires. Also check the vehicle side trailer connector...
    view full answer...

  • Adding a Trailer Wiring Harness to a 1991 Ford E-350 Ambulance with Separate Wiring
  • To install a 4-way trailer connector I recommend using the universal wiring harness # 56146KIT. It will combine the separate wiring on your 1991 Ford E-350 Ambulance. Then use our # ETBC7 kit to convert the 4-way to a 7-way. This kit includes everything for a fully functioning 7-way, as well as the wiring to install a brake controller if you need one. If you do need a brake controller I recommend the Prodigy P3 # 90195. It's one of our top controllers because of the easy-to-use...
    view full answer...

  • Recommended Trailer Wiring Kit for a 2005 Honda Element
  • Yes we do! I recommend going with the Tekonsha Upgraded Modulite Vehicle Wiring Harness Kit with 4 Pole Trailer Connector # 119147KIT. I have attached a video of this kit being installed on a 2013 Buick Enclave that you can use as a reference. Essentially all you will be doing is using the quick splicers to connect the kit to the different lights functions; you can find out which wires are for which functions by using the included circuit tester. You will also need to run the included...
    view full answer...

  • Can Trailer Battery for Interior Lights Ground to Frame as Well as Trailer Lighting
  • If you wanted to ground your accessories/lights to the trailer frame then yes you'd want to ground the battery to the trailer frame as well. This would not be an issue if you had your trailer taillights grounded to the trailer frame as well. Everything grounding to the frame would work fine together.
    view full answer...

  • How To Convert A 4-Way Or 7-Pole Connector To A 6-Pole Connector
  • In order to find the correct adapter for your application, we will need to know which trailer connector you have on the rear of your vehicle. This will typically be a 4-way or 7-pole connector, I have attached a picture of each for your review. For a 7-pole to 6-pole adapter you will need to use part # 47549 and for a 4-way to 6-pole adapter you will need to use the Adapter 4-Pole to 6-Pole part # 30637. If you need the 12V hot lead and electric brake functions on your trailer, the Wiring...
    view full answer...

  • How To Find The Correct Brake Signal Wire When Installing A Brake Controller
  • It sounds to me like you are not splicing into the correct stop light circuit. The correct stop light wire you will need to attach the red wire from the brake controller to on your 2017 GMC Acadia is white. To test this, you will want to use a circuit tester such as the Quickee Circuit Tester part # 3808. The first thing you will need to do is attach the circuit tester to the correct white wire located behind the driver side kick panel. Once attached, depress the brake pedal and the circuit...
    view full answer...

  • Towing a Boat Trailer with a 5-Way Trailer Connector when Tow Vehicle has a 4-Way Trailer Connector
  • Typically a trailer with a 5-way trailer connector has surge brakes and the fifth wire is tapped into the reverse light on the tow vehicle to disengage the trailer's brakes when reversing the vehicle. A 5-way trailer connector will plug into the 4-way on your tow vehicle but you won't have the ability to back up without the trailer's brakes engaging. The solution is to use a 4-way to 5-way adapter like # 20036. This plugs into the 4-way on the back of your tow vehicle and then has...
    view full answer...

  • Installing P3 Brake Controller On 2014 GMC Yukon With No Plug-In Port
  • The 2014 GMC Yukon does not have an option for a plug-in adapter on a 2014 Yukon. They started offering the plug-in option on 2015 and newer. I have attached a helpful article that explains in detail how you wire the brake controller to your vehicle. There are wires under the left side of the instrument panel to the left of the steering column you will need to use for the brake controller. You can use a circuit tester like part # 3808 to test the wires for function when installing the...
    view full answer...

  • How To Troubleshoot A Brake Controller That Recently Stopped Working
  • If your brake controller was previously working and just began to stop, their are a few things you will need to test. The first thing you will need to check is that the brake output signal is reaching the 7-way on the back of the vehicle. You can do this by attaching a circuit tester such as the Quickee Circuit Tester part # 3808 to the blue wire and activating the manual override on the brake controller. If the wire is receiving power then the connection is bad on the trailer side....
    view full answer...

  • Available 7-Way Wiring Extensions

  • view full answer...

  • Adapter Recommendation for In-Bed 6-Way Connecting to Trailer 7-Way
  • Yes, you would only need to plug in the part # 47435 to the 6-way you have in the bed of your truck and it would be fully functional including the trailer brakes.
    view full answer...

  • Troubleshooting LED Lights on the Curt Adapter to 7-Pole and 4-Pole
  • On the Curt 4-Pole and 7-Pole Adapter, # C57674, the blinking LED light for the brake may have a short. I recommend having the company who installed the unit to check to make sure that the wire connection is secured. The wire may be loose and grounding out causing the LED to light on the adapter. As for the 12-volt LED, the circuit is wire direct to the battery and is live all the time.
    view full answer...

  • Troubleshooting Brake Controller When Controller Only Works With Override Applied
  • The brake controller will not work if you are sitting idle and pressing the brake pedal. It will only work when you are moving. The manual override will work when the vehicle and trailer are sitting still. It sounds like the issue you have is with the red wire from the brake controller. It needs to be attached to the stop light switch located at the top of your brake pedal. Make sure the wire is attached to the side of the switch that only shows power when the brake pedal is pressed....
    view full answer...