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  • Converting a 6-Way on a Honda Goldwing GL1800 to a 4-Way for Towing a Trailer
  • We have exactly what you need in the Tekonsha Upgraded Circuit Protected ModuLite with 4 Pole Harness and Hardwire Kit # 119179KIT. Since your Honda Goldwing GL1800 has the stop light function separate from the turn lights you need this kit to combine the stop and turn signals like how your trailer is wired. To install it you will need to connect the following wires to the following functions on your Goldwing: Green - Right Turn Yellow - Left Turn Brown - Running/Tail Lights Thin...
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  • How to Get Reverse Light and Separate Turn and Stop Signals for Trailer Towing
  • To start off your project you need the Hopkins Endurance 5-Way Flat Trailer Wiring Kit # HM47890 this kit includes a 5-Way for your trailer and a 5-Way for your 2007 FJ Cruiser. This will allow you to send the reverse signal to your trailer in addition to the basic trailer functions. You will need to connect the following functions to the following wires: White - Ground Brown - Tail Lights Yellow - Left Turn/Stop Green - Right Turn/Stop Blue - Reverse Once on your trailer side...
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  • Prodigy P2 is Reading n.c. When Gooseneck Trailer is Connected to In-Bed 7-Way Connector
  • Since the Prodigy P2 # 90885 is able to work properly when your trailer is connected to the bumper 7-Way I am thinking that you just received a bad wiring harness. This means that the wiring is working just fine until it T's off. You can verify this by using a circuit tester like part # 3808 and testing the pin in the 5 o'clock position on the 7-Way in your truck bed. Do this while applying the manual override with your P2 and if your harness is working properly you should see a signal. If...
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  • Trailer Connector Needed That is Compatible with the Curt Adapter # C57674
  • If you are looking to add a 4-Way on your trailer to activate the basic trailer light functions then I recommend installing the Hopkins Endurance Easy-Pull Harness # HM48138 which features a ring design to easily disconnect the connector. It also has the wiring labeled as to what wire goes to what function for easy installation. For a 7-Way on your trailer I highly recommend going with a 7-Way that has a junction box like part # 277-000141. The junction box has terminals that you connect...
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  • Adding a 7-Way and Brake Controller to a 2017 Toyota Highlander with 4-Way Trailer Connector
  • To install a 7-Way trailer connector and brake controller in your 2017 Toyota Highlander you will need just 2 items. First, since your Highlander already has a 4-Way you will need # ETBC7 to add the 7-Way, retain the 4-Way, and install the brake controller. I have included some links that show and explain the ETBC7 installation for you. Next you will need a brake controller. I recommend the P2 # 90885 because it is easy to set up and use and it is reliable.
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  • Replacement 6-Way to 7-Way Coiled RV Connector for Flat Towing
  • There is a standard wire color to function relation for trailer connectors which I have attached for you but you will want you test each of the wires with a circuit tester like part # 3808 to be sure you are making the correct connections. The 7-Way Round RV Style Trailer Connector part # A7WCB can be used to replace the 6-way on your coiled connector but a better option for you would be to replace the entire harness using the Hopkins Heavy-Duty Coiled Trailer Connector Adapter part # HM47085...
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  • How to Install 4 to 5-Way Adapter on a 2018 Hyundai Santa Fe
  • In order to install a 4-way to 5-way adapter like the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter part # 20036 on your 2018 Hyundai Santa Fe you will want to use a circuit tester like part # 3808. Once you have acquired the circuit tester you will need to gain access to the wire loom that feeds to the taillights which is located at the top of the hatch. You will want to test each of the wires in this bundle until you have found the correct reverse light circuit. If you need further...
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  • Recommendation to Convert 4-Way on 2015 Ford Edge to 5-Way for Boat Trailer
  • The Hopkins Endurance Multi-Tow 7-, 5- and 4-Way Flat Trailer Connector # HM48470 referenced in your question can be hardwired to your vehicle in accordance to the wiring diagram in the instructions, but it is better suited to install on vehicle's that already have the 7-Way wiring ran. Since you just have the factory 4-Way on your Ford Edge, I instead recommend using the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036. This will plug into your existing 4-Way to provide a...
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  • Troubleshooting Low Voltage on Vehicle Reverse Light Circuit
  • Low voltage on your vehicle reverse light circuit could be caused by damaged wire, a short against the vehicle's frame, or corroded connections anywhere from your fuse box all the way back to the contacts for the reverse light bulb. The best method to find the issue is to trace and test the wiring for that circuit from end to end, using a circuit tester like # 3808 or a multi-meter like # ALL648349 that can read DC voltage. Testing will allow you to find the point where the voltage drops...
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  • 7-Way Tester Recommendation that Plugs in And Test All Lighting Functions
  • If you are looking for a 7-way tester that plugs into a vehicle's 7-way and allows you to test all of the functions what you'd want is the part # TR20117. The part # HM48502 isn't really a "tester" it does light up when the running or headlights are activated though.
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  • Solution to Go from 7-Way Blade to 4-Way Round Trailer Wiring
  • Since there isn't an adapter available to convert the 4-way to a 7-way your best option would be to cut off the 4-way and wire it to a 7-way connector like part # A7WCB. This way your trailer will not require an adapter and everything would work.
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  • Troubleshooting Trailer Running Lights Not Functioning
  • It has to be a weak ground that's preventing the running lights from working. Typically when the running lights of a trailer are on the amperage draw is at it's peak since the vehicle running and headlights are on as well. If you can improve the ground of the trailer you'll see the problem go away. If the lights ground through their assemblies make sure they are attached to a clean part of the trailer frame. Or you can run jumper wires from the assemblies to the main harness of the trailer.
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  • Adding a New 7-Way Trailer Connector and Wiring to a Car Hauler Trailer
  • You will likely need some additional wire to reach the lights when installing 7-Way connector # HM20087. If you just want 4-wire you can use # DW04923-1, sold by the foot, or # 16-4B-1, also sold by the foot. You will also need some butt connectors such as heat shrink version # DW05744-5. If you want all 7-wires you can use # DW04914-1 which is sold by the foot as well. Another option is a 7-Way that is considerably longer, # 50-67-008, which at 22 feet long is more than twice the length...
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  • Diagram to Use for Wiring 4-Way to 7-Way
  • Your 4-way colors are standard so the white is ground, yellow is left turn/stop, green is right turn/stop, and the two brown wires are for the running lights. Since running lights are on both sides of the trailer they gave you two wires for each side. You can run the wires together and run them to the running light pin of a 7-way which is the 11:00 pin. I attached a diagram for a 7-way for you to use as well.
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  • Self Tapping Screw Recommendation for Installing Exterior Light on Trailer
  • Self tapping screws like the part # WLS100 which has a Torx head or a part # FA1131822 which is a hex head style bolt would work well. We don't normally see people seal the lights to the trailer as most light assemblies are a weather proof or waterproof design and don't require it. For a sealant we recommend the # 0160297 for sealing trailer roof vents. This would work well for a light assembly as well.
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  • Recommended Solar Panel Connector to Replace Factory Furrion Solar Input on Trailer
  • We do not carry the solar connector as Furrion does not make them outside of their pricy briefcase solar panel. My recommendation is to change the ends of both connections to make compatible ends. I recommend the 2-Pole Socket Connector - Vehicle Side # PK12801 which doesn't require any soldering and the 2-Pole Trailer Wiring Connector - Trailer Side # PK12800 which again does not require soldering.
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  • Fuse Locations for Trailer Lights on 2008 GMC Sierra
  • Trailer fuses are found in the underhood fuse block. Fuse 1 is your trailer Right stop/turn lamp. Fuse 3 is your Left stop/turn lamp. Fuse 10 is your trailer backup lamps. Fuse 25 is your trailer park lamps. If you don't want to pull the fuses, you can use a circuit tester like # 3808 to check the poles of your fuses on the top for power transfer.
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  • Troubleshooting Brake Controller Installation in 2008 Chevy Tahoe
  • It sounds like your wiring connections are not quite correct. You will need to put a circuit tester like # 3808 on each individual wire to determine function. You should have no power going to the controller except for the 12V power wire. All other wires should have no power. The brake light switch should have power only when you hit your brake pedal, so to determine the brake switch wire, it should have no signal when not hitting the brake and signal when hitting the brake. The ground...
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  • Does 7-Way Molded Trailer End # 54006-009 Come with Heat Shrink Butt Connectors
  • 7-Way Molded Trailer End # 54006-009 does not come with the heat shrink butt connectors. You can add some for the smaller gauge wires using # DW05744-5. For the larger gauge power and ground wires you can use # DW05745-5.
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  • Troubleshooting Trailer Brakes that Only Activate with Manual Override Lever on Brake Controller
  • There are a couple possible reasons as to why your Draw-Tite brake controller is only applying the trailer brakes when using the manual override lever. I first recommend making sure that the red wire from the controller is connected to the cold side of the truck's brake light switch. You can use a circuit tester like # 3808 to ensure you have the correct wire on the vehicle, which will only receive power with the brake pedal pressed, and no power with any other vehicle function. If you...
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  • How to Wire in New Trailer Lights When Wire Colors are Non-Standard
  • You'll have to use a circuit tester like part # 3808 to test all of the wires on your trailer when you apply the various turn/brake signals so that you can identify what each wire carries. And then you can use a jumper wire from a 12 volt battery to each of the wires on the new light to determine the function of each. Most likely white is ground though just from looking at the picture. Aside from that there's no way to for sure know what the color wires all carry function wise.
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  • Troubleshooting Running Lights Not Functioning on Trailer Wiring
  • First thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # 3808 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. That would mean that problem is either due to a ground issue or a short issue. Make sure that the trailer side connector are clean...
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  • Solution for Completing 12 Volt Power Circuit for Trailer Wiring in GM Truck
  • Sounds like you have a mid 2000's GM truck and you're trying to install a brake and activate the 12 volt power source. You still need to insert a 40 amp fuse in the correct slot in the power distribution box to complete the circuit. Check out the help article I attached below for more info on this as well.
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  • How to Wire 4-Way Trailer Wiring Connector to Unknown Function Color Wires
  • You'll have to wire by function. Use a circuit tester like part # 3808 to determine the function of each of the wires and then wire them accordingly to the 4-way. The 4-way wiring colors are yellow left turn/stop, green right turn/stop, white ground, and brown taillight.
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  • 7-Way and Brake Controller Recommendation for 2017 Ram 1500
  • You will need to start with a 4-way (if you do not have one) on your 2017 Ram 1500. For that you would want the # 119179KIT. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. 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. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885....
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  • Replacement 7-Way Recommendation for 2000 Toyota Tundra
  • Sounds like you are just looking for a replacement 7-way socket for your 2000 Toyota Tundra. Since basically all of the 7-ways are made to connect to the same style of connector so the part # HM40920 would be a great option that also comes with a 4-way option.
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  • Replacement Bargman 7-Way Plug part # 54-77-003
  • Sounds like you are looking for the # 54-77-003 which matches the part number and description you mentioned. This is a replacement trailer side 7-way plug.
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  • 7-Way to 6-Way Adapter Recommendation that Can Carry Charge Circuit to Tow Vehicle
  • Sounds like you are looking for a coiled adapter like part # HM47085 which will plug into the 7-way on your RV and has a 6-way on the other side which can carry the 12 volt power source needed to charge your tow vehicle that's using a supplemental braking system. As long as the circuit is active on your RV and you have the correct circuit on the 6-way of your towed vehicle ran to the positive post of your vehicle battery this will work well for you.
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  • Installing Fog Lights By Splicing Into OEM Wiring Harness in 2017 Ram 2500
  • We do not have a harness to wire your fog lights to your OEM fog light assembly. I recommend splicing into your fog light harness to hardwire your new fog lights. You can use a circuit tester like # 3808 to determine wiring function and then use butt connectors like the Deka Heat Shrink Butt Connector # DW05743-10 to make your connections.
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  • Recommended Trailer Brake Controller and Wiring for 2003 Chevy Silverado 1500
  • Starting with the trailer brake controller itself, the Tekonsha Prodigy P3 # 90195 that you referenced is an excellent choice and exactly what I would recommend. This is a great, proportional controller that will activate the trailer's brakes at the same time and with the same intensity that you apply to them in your Chevy Silverado. The Plug-In Adapter # 3015-P that you also mentioned will work perfectly to install the controller in your 2003 Chevy Silverado 1500. One end of the adapter...
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  • Adding a Hitch and Trailer Wiring to 2002 Mercedes Benz E-Class
  • There is a wiring harness available for your 2002 Mercedes Benz E-Class but you would not want to use part # 46255. Instead, you need Vehicle Wiring Harness Kit # 119147KIT, which is a fit for your vehicle. As for hitch # C11830 or # C118303 - which as you noted is the same but with a drawbar - the holes would be drilled in the frame of the vehicle. They would be small holes that would only need to fit the 7/16" hardware of the hitch and would not affect your Mercedes. Please keep...
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  • Troubleshooting Trailer Reverse Light Function on 2009 Dodge Ram
  • The first thing to check is the center pin of your 7-way when your vehicle is put in reverse. This pin should have 12V power when put in reverse and no signal when the vehicle is not in reverse. The easiest way to check this is using a circuit tester like # 3808. If you have this function on your vehicle, then you likely have a ground issue on your trailer. If you don't have this function, then you will need to trace your reverse light function wire to find the short by probing every...
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  • Troubleshooting Brakes Only Working on One Axle of Tandem Axle Trailer
  • If you tested the brake output wires as close as possible to the magnets on the axle in question, using a circuit tester like # 3808, and they are getting voltage, then it's likely not a wiring issue. I also recommend testing the magnets themselves to make sure they are in good condition. I have attached a great article that explains exactly how to do this. The brake assemblies on this axle might simply be out of adjustment. To adjust the trailer brakes, use a brake adjustment tool...
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  • Wiring Diagram and Instructions for 4-Pole Hardwire Kit with Circuit Tester
  • I have the wiring diagram, videos and instructions for the 4-Pole Hardwire Kit with Circuit Tester # 18252, attached to this help page. White Wire = Ground Green Wire = Right Turn/Brake Brown Wire = Running Lights Yellow Wire = Left Turn/Brake
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  • Hooking a Gooseneck Trailer with RV 7-Way Plug to 1999 International 9100 7-Way Round Plug
  • The first thing that you need is the Pollak Trailer Connector Adapter # PK12-724 which converts the 7-Way round connector on your 1999 International 9100 to a 7-Way blade style connector. This will plug into your 9100 and provide a pace to connect the gooseneck trailer wiring. The next step is to then use the Roadmaster Brite-Lite Wiring Converter # RM-732 on your trailer side wiring right behind the 7-Way. This converter takes separate brake and turn signals and combines them so that...
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  • Can Both Connections of Adapter # 37385 be Used for Tow Dolly Lights and Magnetic Lights?
  • Yes, you can use Adapter # 37385 for both of your 4-way connections; there will simply be an unused pin in the adapter. However, you will need to be sure that the amperage draw from both lights does not exceed the rating of the tow package wiring on your RV. Your other option would be to simply cut off the 4-way on the magnetic kit and splice it into your tow dolly's wiring. I've added a pair of links to video reviews of this part for you to take a look at.
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  • Troubleshooting Trailer Brake Controller Not Receiving Power After Brake Light Switch Was Replaced
  • The power of your brake controller should not be effected by the stop light switch. When you connect a brake controller, the 12V power comes into the controller on the black wire. The red wire is the one that connects to the cold side of your brake controller. This red wire does tell the brake controller that you are hitting your brake pedal so it can send the appropriate braking power to your trailer brakes via the blue brake controller output wire. I've attached an article to help...
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  • Recommended 4-Way Trailer Connector for a 2015 GMC Terrain
  • The color of the wires inside the vehicle connector will not always match the color of the wires inside the trailer connector. There is a standard wire color to function reference chart which I have attached for you but this is not always the same on every vehicle. You will need to use a circuit tester like part # 3808 in order to determine wire function as this is the only sure fire way to tell. In order to add a 4-way trailer connector to your 2015 GMC Terrain, you will want to use...
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  • Wiring Needed to Install 7-Way and Brake Controller on a 1962 International Scout
  • We do have some universal wiring fits that I can recommend for you, but we do not have details on a 1962 International Scout so it will be up to you to make sure that the appropriate wiring is in place and accessible. To start off you need to install a 4-Way flat connector on your Scout. I recommend the Tekonsha part # 18252 for a basic kit or part # 119147KIT which will draw power from your battery directly and has a modulite that will protect the wiring on your vehicle from feedback. For...
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  • European Round 7-way Plug to a Standard RV 7-Way
  • A Euro 7-way does not have the same functions as the traditional 7-way, it is basically the equivalent to a traditional 4-way. In order to convert from a euro 7 to a US 7 way you will need to cut off your current one and hardwire a 7-way. You will also have to add wiring for the other functions. I recommend the Hopkins Endurance Quick-Install 7-Way Trailer Connector # HM47210 for the 7-way. In order to install it you need to these the wires that you currently have and connect them to the...
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  • Recommended Best 7-Way Connector Mounting Bracket for Universal Fit
  • For the Universal Wiring Harness w/ ModuLite and Brake Controller Harness - 7-Way Trailer Connector # 22550, I recommend the Mounting Bracket and Installation Hardware # PK12711U. You may also be interested in the No-Drill Mount Bracket, Short # 18140 or long # C57202. Another option is the bracket that attaches to a 2 inch receiver # C58000 if you prefer that style.
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  • How to Get New 4-Way Connector for Pontoon Trailer
  • What you'll need is actually a new 4-flat connector because you are missing a pin on yours. You can simply cut off the connector and wire in connector # HM48110. Yours has 5 wires because it is a wishbone harness and one of the wires is going to be for the same function so be sure to use a circuit tester such as # 3808 to test all of the functions. You will want to use butt connectors # DW05744-5 to connect the wires and you'll have yourself a proper 4-way trailer end connector. I've...
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  • Ball Mount with 2 Inch Rise and Trailer Wiring Harness for a 2008 Land Rover Range Rover
  • Since your trailer coupler is 2 inches higher than the hitch on your 2008 Land Rover Range Rover you will need a ball mount with a 2 inch rise such as # C45270. This ball mount fits a 2 inch hitch receiver, is rated for 7,500 pounds gross trailer weight, and takes a ball with a 1 inch diameter shank. For a 2 inch ball use # 63845. For a 2-5/16 inch ball use # 63847. For a wiring harness you can use a hardwire harness such as # 119190KIT. Or, if you want to avoid splicing into the vehicle...
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  • Troubleshooting Vehicle Lighting That Fails When Trailer is Connected
  • Since your car lights work when the trailer is not connected, but not when the trailer is connected, then that additional power draw of the trailer is causing the vehicle lights to not function correctly. It sounds like you may have a bad ground on your trailer or on your vehicle. I recommend starting your trouble shooting by using a circuit tester like # 3808 to check your trailer connections when the trailer is not connected function by function. Check the ground on your vehicle side...
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  • Wiring Harness for 2016 Ram ProMaster 2500
  • There is a harness available that will work for your 2016 Ram ProMaster 2500. What you need is the Vehicle Wiring Harness with Install Kit # 119190KIT. This is a universal kit that you will need to hardwire. I've added links to video reviews of this kit for you to take a look at.
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  • Troubleshooting New LED Trailer Wiring that Only Partially Illuminates when Connected
  • It could be related to your tow vehicle. It's pretty rare but some trailer wiring harnesses won't work with LED trailer taillights. Aside from that you could have a short to the trailer frame on one of the circuits which is putting a very small amount of current on the trailer frame which can backfeed onto trailer lighting. Since LED lights don't take much current to partially illuminate this is a possibility. Try checking the trailer wiring connector on the tow vehicle for voltage...
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  • Semi Trailer Light Function Locations on Heavy Duty 7-Way Pin Connection
  • On a 7 pin round which is the common connection on a semi trailer, the clearance/marker lights are at the 10 o clock position when you look at the trailer wiring connection. When looking at the connector on the back of the truck, that will put the same function at the 2 o'clock position pin. I've attached a photo of each to assist.
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  • Troubleshooting Trailer Not Connected with New Brake Controller and Harness on 2011 Ford F-150
  • The Prodigy P3 controller # 90195 is an absolute favorite. The fact that when you hit the manual override, your brake lights on your vehicle are working definitely helps. The issue is with the brake output wire somewhere between your controller and the trailer brakes because when it reads a power draw on that wire, it will read on the screen as trailer connected. To determine where the short or connection issue is, I recommend you use a circuit tester with an incandescent light like...
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  • Trailer End Connector That Works With Pollak Vehicle End Socket PK11720 on 1998 Dodge Van
  • Thank you for the photo; it shows that you have the Pollak 7-Pole Trailer Wiring Socket # PK11720. That would be the replacement if you are looking for a new one. If you are looking for the trailer end connector the Pollak 7-Pole Trailer Wiring Connector # PK11700 would be what you need. I've added links to video reviews of both parts for you to take a look at.
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  • Will 7 Way Trailer Connector Vehicle Tester # TR20117 Work with Curt Brake Controller # C51110
  • Yes, the 7 Way Trailer Connector Vehicle Tester # TR20117 that you referenced can work with the Curt brake controller part # C51110 and the wiring and # ETBC7 kit that you mentioned. While this has only been tested on Tekonsha controllers the Curt controller you referenced is a standard style of controller like the Tekonsha controller so it would work fine.
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  • Finding Brake Light Switch On 2007 International 4400 Series Truck with Air Brakes
  • Unfortunately I cannot pin point where the brake light switch is on a 2007 International 4400 series. You'll need to trace your air line to find the wiring connection and then confirm the correct wire using a circuit tester like # 3808. This will allow you to probe the wire through the insulation to determine that it is the proper function before your splice into it for a brake controller or 3rd brake light.
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  • Trailer Brake Fuse Locations on 1998 Ford F-250
  • It sounds like you are looking for the fuses/relays on your truck related to the trailer electric brake controller. I took a look at the online owner's manual for your 1998 Ford F-250 for the appropriate fuse locations. Inside the passenger compartment fuse panel, which is located below and to the left of the steering wheel by the brake pedal, there is a 5 amp fuse located in the number 18 position. This particular fuse is for the trailer electronic brake controller. There is also a 30...
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  • Troubleshooting Trailer Running Lights that Stay On After Installing Brake Controller
  • If the running lights on your trailer are staying on, even with the tow vehicle off, it's possible that the trailer connector is mis-wired. I recommend first using a circuit tester like # 3808 to test the pins on the vehicle side connector. Make sure that there is no power at the running lights circuit when the vehicle and lights are turned off. If you do not have power there, then we know the issue is somewhere on the trailer side. On the trailer side, I recommend checking its 7-Way...
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  • Troubleshooting Clearance Lights on Enclosed Trailer that Don't Work
  • The lights in the picture you submitted should come on with the running lights/headlights of your vehicle. First thing you should do at this point is test the connector of the wiring harness with a circuit tester part # 3808 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. That would mean that...
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  • Troubleshooting Wiring Issues with 2008 Ford F-150 with Factory Tow Package
  • If all your connections are bad, you may just have a bad connector and need the replacement # HM40975 and a few fuses. If you've already used a circuit tester like # 3808 to check the wiring functions individually and the fuses outlined in your owners manual, then you can Plug-N-Tow Vehicle Wiring Harness # 40185 or if those plugs aren't working either the hardwire # 18252. Once you have a 4-way, you can use the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185 and simply splice...
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  • Middle Pin Came Off From Pollak 7-Pole Trailer Connector
  • I spoke with my contact at Pollak regarding your 7-Pole Trailer Connector # PK12706. He stated that If the center pin broke/came off from the connector, the entire connector should be replaced. There isn't really a way to securely re-attach the pin if it broke off from the connector.
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  • Troubleshooting No Power on Blue Wire at Connector on 2002 Chevrolet Silverado
  • The blue wire from the brake controller back to the 7-Way connector on your Chevy Silverado is the brake controller output circuit. There are a few possible reasons as to why you aren't getting any power at the connector with the brake pedal depressed or manual override activated on the controller. First, I recommend simply checking that the brake controller output/gain is turned up. If the power is set too low, then you aren't going to get much voltage on the blue wire or at the connector....
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  • Troubleshooting Trailer Brakes Pulsating with Turn Signal and Brakes Activated on Pontiac Montana
  • It sounds like you might have tapped into the wrong wire beneath the brake pedal in your Pontiac Montana SV6. The red wire from the brake controller needs to be spliced into the cold side of the brake light switch on the vehicle, which is a wire that only receives power when the brake pedal is depressed, and none when any other function is activated. The wire you currently have the red wire connected to may be a shared turn signal/brake circuit, which is why the brakes are pulsating with...
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  • Troubleshooting Lighting That Stopped Working on 1987 Ford F-250 After Radio Shorted
  • Sounds like you had a massive short that probably damaged some of the wiring that leads to the taillights. You'll want to trace the wiring back from the taillights forward to see if you can find any melted wire and fix as needed. There may be a fusible link from one of the main power wires of the fuse box that is blown as well.
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  • Troubleshooting Brake Controller that Gets Warm to Touch
  • How old is the brake controller? Does it still seem to be working properly? Overheating brake controllers aren't common but it would most likely indicate a short. I can help you troubleshoot the controller though. Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide. Using a circuit tester like the Quickee Tester, part # 3808, you should get output to the controller...
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  • Troubleshooting New 7-Way on Truck that Only Worked with One Trailer
  • It most likely is a ground issue on the new connector, but that fact that it works with one trailer but not the rest makes that harder to pin down. Make sure you didn't blow any fuses trying the second trailer too as that's a possible issue. If you test all the pins on the 7-way for voltage do you get the correct voltage in the right places? Use the video and picture I attached as a guide for this.
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  • Will the Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56070 Fit a 2011 Ford F-250 Super Duty
  • The Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector # C56070 will fit and work well on your 2011 Ford F-250 Super Duty. It is a fairly easy installation that most people can do at home. I have attached an installation video of this on a 2013 Ram 2500 for you to reference as well as the installation instructions.
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  • Four Pole Trailer Light Kit for a 2002 Toyota Solara
  • I recommend Curt's powered tail light converter kit, part # C59236 for your 2002 Toyota Solara. This kit installs quickly and relatively easily to the wiring that exists in your vehicle (There is some splicing involved), and includes a powered converter that connects to the battery to help your vehicle manage the power needs of the trailer. I've included a video install of this kit onto a 2011 Audi A4 so you can get an idea of the installation process for this kit. If you haven't...
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  • Troubleshooting No Left Turn/Stop Trailer Signal Coming from Fuse Box on a 2015 Chevy Silverado 2500
  • If you checked the wiring for your left turn trailer stop signal and you are getting no signal directly out of the fuse box then you will want to replace the fuse on your 2015 Chevrolet Silverado 2500. This will be the mini fuse in the 14 position in your engine compartment fuse block per your owner's manual.
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  • Will Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56070 Fit 2018 Chevy Silverado 2500
  • Yes, the Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56070 referenced in your question is confirmed to fit your 2018 Chevy Silverado 2500 that is equipped with the factory 7- and 4-Way connector. This harness will plug in-line with the existing factory wiring on your truck to provide a 7-Way in the bed for easy hookup with your trailer. When installed, you will still be able to retain use of the factory connectors at the rear bumper. I have attached a sample installation video...
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  • Tricky Tow Package Wiring on 2013 Audi Q7 to Think a Trailer is Connected
  • Circuit tester # PK12741 will likely not draw enough power to make the tow package on your 2013 Audi Q7 think a trailer is connected. This is due to the light power draw from the LED lights. What you need is adapter # C57003 for a 7-Way to 7-Way or # TR20141 for a 7-Way to a 4/5-Way. These adapters have load resistors that will simulate additional load on the system so that the vehicle won't throw the bulb out alert when a trailer is connected. If you are just doing some testing...
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  • Trailer Wiring Recommendation for 1988 Dodge Caravan
  • Regardless of your trailer wiring needs you'll need to start with a 4-way. For that you'll want the part # 18252 which you'll have to hardwire to your 1988 Dodge Caravan. 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 and also has a separate 4-way so you can basically use it for either style of trailer. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller....
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  • How to Wire a 7-Way Trailer Connector on a 1999 Chevrolet S-10 Pickup
  • In order to install a 7-way trailer connector on your 1999 Chevrolet S-10 Pickup you will want to use the Adapter 4-Pole to 7-Pole and 4-Pole part # 37185. This adapter will plug into the 4-way trailer connector you have on your vehicle and will give you both 4 and 7-way trailer connection points. Since you boat trailer only uses 5 of the 7 wires on the trailer connector, the only 2 wires you will need to attach on the 7-way is the ground and reverse light circuit. In order find the reverse...
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  • Troubleshooting Trailer Lights on 1996 Evans Log Trailer and Dashboard Noise
  • Normally when there is an issue with some wiring working and some not working it is due to a bad ground or a short. The noise in your dash sounds like another wiring issue with a relay or a circuit breaker and can be due to a bad ground or a short as well. Let's start with the lighting issue. I recommend using a circuit tester like # 3808 and checking each function at your trailer connector when the trailer is not connected. Individually check each pin for proper function on your...
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  • Wiring Canopy 3rd Brake Light on 2009 Chevy Silverado 1500
  • The easiest way to wire a 3rd brake light on your Chevy Silverado canopy is going to be by tapping into the Center High Mount Stop Light (CHMSL) in the cab of the truck. Based on my research, this wire should be bundled with the factory brake controller wiring located under the dash. There should be a handful of wires there that are blunt cut and taped off at the ends. There will be a wire there that has a tag on it labeled CHMSL. The wire color is likely orange. This is the correct...
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  • Troubleshooting Passenger Side Trailer Blinker Light Not Functioning
  • If voltage is making it to the wiring of the taillight on the brake/turn circuit but it's not functioning that would indicate that the problem is most likely a weak ground for the light assembly. Try improving how the light grounds and it will most likely start to work again. You can also run a jumper wire back from the light to the main ground circuit of the trailer's wiring to see if that fixes the problem. I attached a help article on troubleshooting trailer wiring installs for...
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  • 7-Way Recommendation for Bed of 1994 Ford F-250 for Lance Camper
  • Sounds like you are wanting to put a 7-way in the bed of your 1994 Ford F-250. We have kits for just that like the part # 41157. This will plug in line with the 7-way you have at the rear of the vehicle and allow you to have another one in the bed of the truck.
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  • Tekonsha Prodigy Electronic Brake Cable Replacement for Damaged One Dragging on Road
  • Easiest solution we can offer for replacing the 7-way and lead of your Prodigy RF part # 90250 is to hardwire in the part # H20042 in place of the one you lost. Or you could even cut the loom on both side of what you have, strip back the wiring, and then butt end connect all of the connections. For a set of ten butt connectors you'd then want the part # DW05745-10.
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  • Troubleshooting Heating Element on Water Heater
  • To test your heating element you will need a multimeter like # ALL648349. You will set your meter to the lowest ohm setting and put one probe on each of the screws on the heating element. You should get something between 10 and 16 ohms. When one is all rusted or corroded you would get no reading to show there is no continuity and it would most likely throw your breaker. Since your water is really how, you most likely have a failed heating element. If you need another replacement,...
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  • Availability of Trailer Side 6-Way with 20 Foot Lead
  • The longest 6-Way connector and wiring lead combo we have avalable is the Hopkins 6-Way Connector with Jacketed Cable # H20036. This harness features a cable length of 8 feet. In order to extend the harness to the 20 feet you are needing, you will just need to wire in the Jacketed 6-Wire from Deka, part # DW04906-1. This jacketed wire is sold by the foot, so you can get exactly the length you are needing for your trailer. I have attached a short video demonstration on the Hopkins 6-Way,...
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  • Installing 7-Way Trailer Connector to Maintain Correct Wiring Functions
  • If you are replacing a Pollak 7-Way blade style vehicle connector like # PK11893 with a Hopkins brand connector such as # HM40920 you will have no issues since both use a standard round U.S. Car type connector that keeps the wire/circuit assignments the same. Both of these vehicle sockets will distribute light, power and brake signals on the socket pins in the RV standard format, as shown in the linked photo. The only real difference between these two parts is that the Hopkins socket...
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  • Function of Brown Trailer Wires With Green and Yellow Tracers
  • If you are referring to wire colors on a trailer, then usually a brown wire is for running lights. If your trailer has two brown wires, one with a green tracer and one with a yellow tracer, then these would typically be the running light wires for the right and left sides of the trailer, respectively. Some trailer harnesses such as the 25-foot Mighty Cord # A10-4225VP are what is called a "wishbone" harness, which has two running light wires to make it easier to make the connections...
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  • Adapter Recommendation for Going from 7-Way Round to Flat
  • There is no taillight converter installed in the Adapter part # HM47425 that you referenced so if you need to go from separate to combined lights then this kit is not for you. You will need to add a converter, like the Tow Ready, # 119130. Just cut off the 4 way end and wire it into this adapter. I have attached a picture which illustrates this.
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  • Trailer Wiring Recommendation for 1997 Nissan Pickup
  • With a 4-way flat trailer wiring harness like the # 118353 which is a fit for your 1997 Nissan Pickup the only functions you get are the turn signals/stop lights and running light circuit. If there's an additional circuit needed like maybe a 12 volt power circuit you'll need the 4-way to 7-way adapter part # 37185. You'll then need to connect the black wire of this to the positive battery terminal through a breaker like part # 9510.
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  • Troubleshooting Right Side Running Light Not Functioning on Trailer
  • Most trailer wiring issues are due to insufficient grounds. But if you don't have power to the light like you mentioned the issue is that the circuit does not carry voltage. Since the other side of the trailer works it's most likely cut wire somewhere between the other side of the trailer and the non-working side.
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  • Installation of Hopkins 7-Way Molded Trailer Wire Connector Based on Wire Function vs. Color
  • The 7-Way Molded Trailer Wire Connector - 3' Long # H20042 has different wiring colors than other connectors. The color that will connect to the reverse light function is the yellow wire of this molded connector. They label it Aux as some people choose not to use the reverse light function and add a second 12V power instead. You just want to make sure functions match on either end of the connectors. The Hopkins connectors are different than the standard colors, so you will want to make...
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  • How To Wire Trickle Charge For Battery On A Camper Trailer
  • To begin, you would need to install a 7-Way connector on the trailer. Since you will need several things including connectors, I recommend going with the Trailer Wiring 7-Way Upgrade Kit, Item # ET7WK, to make your project easier. It has a 7-Way connector, junction box, wire loom, and the hardware you need. Your trailer wire colors may be different so you have to wire in the new connector function to function, not color to color. To determine the functions of the wires, touch each...
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  • Brake Controller Output Pin Location on Trailer Side 6-Way Connector
  • Typically the Brake Controller Output pin will be the 1 o'clock pin for a trailer side 6-Way connector (see attached picture). This isn't always the case though so you will want to double check before assuming that is the case for using the Mighty Cord 7-Blade to 6-Pole Connector Adapter # A10-7276VP. You can verify the functions by grounding the negative terminal of the battery from your tow vehicle and then using the positive terminal to test the various pins on the 6-Way. You...
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  • Troubleshooting Brake Controller Not Showing Connection on 2016 GMC Acadia
  • So in order for a brake controller to not sense a trailer connection that means that there is a break somewhere on the blue wire of the controller back to the trailer's brakes. Typically this is a dirty or bent brake output pin on the connector of the vehicle. Have you checked the condition of the 7-way pins on the vehicle? Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the...
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  • Will LED Trailer Adapter # TR20141 Allow Trailer With LED Taillights Function
  • Yes, the 7-Way to 5-Way/4-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs # TR20141 is designed for exactly what you are experiencing. It will allow a vehicle with bulb out sensor display codes tow a trailer with LED lights without an issue.
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  • Do Trailer Running Lights and Brake Lights Run on Same Circuit
  • Your brake lights and running lights are designed to be operated by two different circuits. You'll need to find the running light circuit in your trailer's wiring and then you'll need to run that circuit to the running light assemblies you have. I attached a picture of a wiring diagram and a link below on trailer wiring for you to check out as well.
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  • How to Tell if Converter on 2009 Toyota Tundra is Bad
  • Since the trailer works perfectly when connected to a different tow vehicle the problem should be on your 2009 Toyota Tundra. If you have wiring with a converter like the Tekonsha Upgraded Modulite Vehicle Wiring Harness Kit # 119147KIT you would need to purchase the whole kit as the converters are not sold separately, but I recommend doing some troubleshooting first. You always want to start off by making sure your tow vehicle connector is clean and free of corrosion and debris....
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  • Trailer Brake and Turn Lights are Always on When connected to 7-Way of 2011 Jeep Liberty
  • The next thing to do is to check both the 7-Way on your 2011 Jeep Liberty and the 4-Way on your trailer. Make sure the inside on each is clean and free of corrosion and debris. If that looks good then you will want to test them. You can use a circuit tester, like part # 3808, to test the pins on your 7-Way to make sure they are working properly, and a 12V power source, like the battery in your Jeep, to test the 4-Way pins on your trailer. For your trailer you will ground the negative...
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  • Troubleshooting New Trailer Tail Lights on Utility Trailer Towed By 2002 Ford F-250
  • If you recently installed new trailer tail lights and you are having trouble with the brake light circuit functioning I suggest checking into the grounding for the lights. Some lights use their mounting posts to make the ground connection; others will use a separate (usually white) wire with a ring terminal; still others may use their hardware to establish ground. Either way, you need a good solid connection to bare metal. Sometimes a weak ground may let one light function work but not...
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  • Troubleshooting Running Lights Function When Headlights Are On
  • It sounds like the ground wire of your system needs improving. The ground needs to be bare metal to metal with no corrosion or rust. Even paint can affect the quality of your ground. Normally when one function doesn't work correctly like in this instance, the ground is the issue. A poor ground can show when a significant power draw like headlights is present and when the draw is not there, the function returns. I recommend you use a circuit tester like # 3808 to check your functions...
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  • Troubleshooting Weak Trailer Braking and Low Voltage at Connector
  • With the brake controller set to its maximum setting, you should be getting 12 volts at the trailer connector when applying the manual lever. Since you are only getting 8.5 volts at the connector, the issue you are having is likely somewhere on the vehicle side. Start by tracing the wiring back from the 7-Way connector and along your tow vehicle, checking for any damaged or corroded sections, fixing as needed. If all the wiring looks okay, I next recommend checking the brake controller...
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  • Troubleshooting Running Lights Not Working on 2007 Coleman Fleetwood Cobalt
  • In order to determine the problem you'll need to use a circuit tester such as # 3808 to test the connector on your vehicle after disconnecting it from your trailer. Check the wiring going into your harness from your tail lights to see if those are correct, if not then the issue is with the vehicle wiring. If the signals going to your harness are okay, you'll need to test the signals coming out of the harness, and if they are correct then your issue is likely going to be with the trailer...
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  • How to Install the Tow Ready Trailer Wiring Adapter Part # 20036 on a 2017 Hyundai Santa Fe
  • When installing the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter part # 20036 on your 2017 Hyundai Santa Fe you will want to use a circuit tester like part # 3808 to find the correct wire that is responsible for the reverse light circuit on your vehicle. I have attached an installation video for you and at the 1:30 minute mark you can see the process to find the correct reverse light wire. Please note that this installation video is on a 2015 Toyota Highler and although the process...
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  • Should the Blue Trailer Connector Wire be Hot All the Time
  • The only wires that could be hot all the time on a trailer connector are the 12 volt hot lead, which is usually a black wire, and, if applicable, the auxiliary power wire, which is normally yellow or purple. The blue wire is usually for electric trailer brakes and if it is hot all the time that would indicate a short. I have included a link to our help article on trailer wiring that has numerous diagrams showing the functions of the pins for many trailer connector styles. You can't always...
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  • Where is a Reverse Light Only Wire on a 2007 Honda Pilot for a Backup Camera
  • If you are unable to use the reverse light fuse on your 2007 Honda Pilot because that fuse is also used for other systems in the vehicle you will have to tap into an actual reverse light wire. It looks like on your Pilot the reverse lamps are in the rear hatch. In many cases there is a wire that carries the reverse light signal located in the wiring harness that goes to one of the tail lights which will be easier to access than the wiring in the hatch. Use a circuit tester such as # 3808...
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  • What Wire Gauge are Hopkins 4-Way Harness and Optronics 4-Way Harness?
  • All of the wires on the Hopkins 4-Way Flat Trailer Connector # HM48133 are 18 gauge except for the ground wire, which is 16 gauge. As for the Optronics 20 ft. Wishbone 4-Way Trailer Wiring Harness # A20WB all of the wires are 20-AWG gauge. I've added links to video reviews of both products for you to take a look at.
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  • Complete Towing Package for a 2015 Volvo V60
  • Your 2015 Volvo V60 that was manufactured in May of 2015 was before the mid-year harness was developed therefore you will need to use a hardwire option like the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness part # 119190. The hardwire harness will be the only option that is available for you as the custom fit harness will not work on your vehicle. For a brake controller I recommend the Tekonsha Prodigy P2 Trailer Brake Controller part # 90885. The Prodigy P2 is...
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  • How to Determine if 2 Brown Wires on Trailer with 7-Way are Used for Running Lights
  • It is very likely that the wiring on your trailer has 2 Brown wires which carries the running lights on either side of the trailer like the wishbone style harness # A35W42B from Optronics does. You will want to verify this before connecting them to a replacement 7-Way though. You can do this by using a 12V battery, like what would be in your truck, and ground the negative terminal while using the positive terminal to test both Brown wires to see what light function they carry. If...
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  • Will Brown Wires from 5 Wire Wishbone be Connected to Single Brown Wire on 4 Wire Harness
  • If your wishbone that has 5 wires has 2 Brown wires, like the Optronics # A35W42B, then they would both be for the running light function and you will connect them to the single Brown wire one a 4 wire like the Curt # C58044. The two Brown wires on a wishbone let you run the running light function down both sides of your trailer. If you only had 4 wires then you would have to cross the Brown wire to the other side of your trailer when needed. I have attached some photos of both parts...
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  • Replacing a Trailer's 6-Way Connector with a 7-Way Connector
  • The easist, and most sure way to know which wire is which function is to provide power to them, one by one, and see what happens. Wiring by function is unreliable because even though there is a traditional wire color code it isn't standardized by any means. Once you have found the functions of each wire you wan the pins on the new 7-way to be in the following pattern: 1 O'clock - Tail and running lights 3 O'clock - Left turn and right brake lights 5 O'clock - Ground 7 O'clock...
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