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Expert Answers about Trailer Wiring


  • Wiring Harness For a 2022 Kia Telluride That Does Not Have Factory Tow Package
  • If your 2022 Kia Telluride does not have any of the wiring for adding a tow package you will need the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness # 119190 to tie into the tail light wiring for a 4-way flat trailer connector. Be sure to check your Telluride as even if it did not include a factory tow package it is likely that the wiring for a Tekonsha 4-Way # 118784 or Curt 7-Way # C68JR is still on your Telluride. The connector is located behind the drivers...
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  • Can 12V Auxiliary Wire on Trailer 7-Way Be Used To Power Trailer Brakes
  • The auxiliary or back-up wire on a 7-way trailer connector like # HM20041, is used to power to things like interior trailer lights or other 12V accessories. It can also be used to power backup lights, but not many trailers are equipped with those. There is a dedicated brake wire (typically blue) on your 7-way trailer connector which runs back to each of your brakes. This is the wire you want to connect to the corresponding brake wire on your vehicle's 7-way or 7 and 4 way like # 37185....
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  • Is There an Adapter for a 2006 Lance 845 Camper Factory Round 7 Way Plug?
  • The Pollak Trailer Connector Adapter - 7-Blade Plug to 7-Pole Round Pin - Die-Cast Zinc # PK12728 will actually not fit the plug you have on your Lance Camper. This is due to Lance making their own style plugs every now and then. This has caused issues before and the best option will be to replace the plug with a more common style. The Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End # PK12706 will plug into a standard 7 Blade plug, that your 2021 Sierra 2500 will...
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  • Recommended Trailer Wiring Harness for 2013 VW Jetta SportWagen
  • The EcoHitch # 306-X7284 is a great choice! In order to add wiring to tow your boat (those are really cool, by the way), you'll want to use the Tekonsha # 119190KIT which comes with a circuit protected Modu-Lite converter to help protect the electrical components on your vehicle. I recommend using the Tekonsha over the Curt # C59496 harnesses because the converter is a little bit more reliable and since you're likely going to have LED lights on your trailer, the slight difference in amp...
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  • Trailer Wiring and Hitch for 2018 BMW i3
  • For your 2018 BMW i3 that we have the EcoHitch part # 306-X7277 as a confirmed fit for you'd need to use universal trailer wiring like the # 119250KIT since we do not have any custom fit options at this time. This kit uses sensors instead of wire splices though so there wouldn't be any wires cut on your vehicle.
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  • Can Trailer Brakes Function Without a Brake Controller on 2022 Hyundai Palisade
  • That is correct. A 7-way adapter like the Curt Trailer Connector Adapter # C57672 has a blue wire which connects to a typical brake controller in your vehicle. The brakes on your trailer cannot be used without a brake controller. You need the brake controller to send the signal for braking in order for your brakes to function. You can, however, use the Curt Echo # C51180 without running the blue wire off of the back of the adapter. The Echo plugs in-line with the 7-way at the back of...
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  • 2022 Toyota Highlander Wiring for a 7-Way Blade Connector
  • I would be happy to help you set up your 2022 Toyota Highlander to haul your new travel trailer. The wiring harness you currently have controls your trailer's lighting functions only. You do not need to rewire your Toyota you just need another harness. The second harness you will need is the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires item # ETBC7. The kit includes a pre-wired 7- and 4-way trailer connector that mounts easily at the...
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  • Recommended Trailer Wiring Harness for 2011 BMW X3 28I
  • For your 2011 BMW X3, the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT is a great choice if you don't want to splice into your vehicle wires, but it is more expensive due to the zero contact interface sensors. If it were me, I'd use the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness with Installation Kit # 119190KIT confirmed to fit your vehicle and use the quick splice connectors on the factory wires....
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  • Upgrading Trailer 7-Way Connector To an EZ Connect Wiring Harness
  • If you are going to change connectors the EZ Connector Magnetic 7-Way Trailer Connector # 319-S7-10 would be the route I recommend going. Unlike your 7-way blade and 7-way round connectors this connector does not have any form of tension connector that can wear out over time. The connection pins sit against each other with no connector sitting around the pin that may become loose. For the vehicle side there are a few options but the most common being the EZ Connector Custom Vehicle...
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  • Is My 2016 Honda Pilot Trailer Wiring 7-way or Only 4-way?
  • Your 2016 Honda Pilot will have a trailer wiring plug behind the driver's side at the rear by your tail lights. I've attached a video of the Curt # C56291 harness to assist. The Curt wiring harness # CU86FR is the 7-way wiring harness that connects to the same location. Each kit activates the tow package already available in your vehicle, so I recommend installing the 7-way unless you know you will only ever use the 4-way. It is a little more work on the installation side but gives you...
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  • Trailer Connector Recommendation for 2018 Toyota Highlander
  • The correct connector will depend on the trailer you're planning on towing. If the trailer has a simple 4-pole trailer connecter, I'd recommend the Tekonsha # 118449. The connector/harness comes in 2 parts, the converter box and the harness with the 4-pole connector. Both pieces would install into the factory connetors located under the rear hatch threshold as shown in the provide photo. The converter plugs into the 10 pin socket closer to the driver's side and the trailer connector itself...
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  • How Do I Troubleshoot The Trailer Wiring Of My 2022 Toyota Highlander
  • In order to troubleshoot your 2022 Toyota Highlander wiring installation you will need some tools to assist you. You will need a 12V circuit tester. I recommend the Cordless Circuit Tester, part # PTW2979. In addition, you will also need basic wiring tools, electrical tape, a wire stripper, dielectric grease, and wiring fasteners. Troubleshooting your trailer wiring can be very intensive. This can be caused by a number of issues. If you have a plug in harness, it may be for models with...
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  • Trailer Hitch Receiver Fit for 2020 Toyota Highlander
  • You can get a Class III trailer hitch receiver for your 2020 Toyota Highlander right here, with the Curt Trailer Hitch Receiver # C99FR. This is a Class IIII, 2" hitch that also fits the Hybrid models of '20 Highlander and will be exactly what you need to tow your boat trailer; I have added a link to a video install for you to check out as well. To complete your towing setup with your Highlander you will need a trailer wiring harness, either the T-One Vehicle Wiring Harness # TK74FR...
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  • How To Charge Camping Trailers Battery While Driving Using The 7 Way RV Plug
  • Yes, you can but please keep in mind that this is not the most efficient way for charging a depleted battery. However, for maintaining a charge on a battery while you are driving you can use the 7-way connection such as the Optronics 7-way, # A7WCB between your truck and trailer by running a 10-gauge power wire like # 10-1-1 from the 12V terminal on the trailer 7-way to the trailer's positive battery terminal. However, keep in mind that 7-way connectors do NOT have an automatic shutoff,...
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  • What is the Difference Between Curt Wiring Harnesses # C56175 and # C59236?
  • Both the Curt # C56175 and # C59236 will add a 4-way trailer connector to your 2006 Volkswagen Golf. The main difference between these products is that the # C59236 is a powered tail light converter, which means it gets wired to your vehicle's battery instead of only receiving power from your vehicle's tail light circuit. Basically, what this does is limit the power drawn from the tail light wiring to isolate your vehicle wiring from your trailer wiring. In case there is an overdraw situation,...
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  • Replacing 6-Pin Trailer Connector For 7-Way Blade Connector
  • If you are not wanting to use a Adapter 7-Pole to 6-Pole # 47549 and would rather wire in a new Hopkins 7-Way RV Style Connector # HM20087 the wiring may be confusing. There may be some trial and error involved as the wiring could have been connected differently on your trailer. I have included a picture below of the plug wiring if you have not already removed the 6-pin connection so that you will be able to label the wires based off their location in the connector. I recommend tracing...
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  • Add 7-Pin to 2022 Hyundai Palisade with Factory Tow-Package
  • Use the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package, # C68JR to quickly and easily install a 7-way, RV-style trailer connector on your 2022 Hyundai Palisade. This is a plug-n-play install but I do highly recommend, to keep the connector safe from corrosion and moisture you use a Dielectric Grease such as, # 11755. For a brake controller, I suggest the Curt Echo Wireless Trailer Brake Controller, # C51180 for 1 to 2 axles. Once the Echo is installed, it will sense...
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  • Redarc Tow-Pro Elite vs. Curt Spectrum Brake Controller for 2019 Audi Q5
  • On the surface, there is a lot of similarities between the Curt Spectrum Trailer Brake Controller # C51170 and the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR, but the Redarc is truly the superior option in every way for your 2019 Audi Q5. Since you don't have trailer wiring in your Audi you will need to add Vehicle Wiring Harness # 119190KIT and Universal Installation Kit for Trailer Brake Controller # ETBC7, though the Spectrum also needs the Wiring Adapter for Curt Trailer...
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  • Plug and Play 7-Way Trailer Connector for 2018 Ford F-150
  • To install a 7-way on a 2018 Ford F-150, you'd use the Curt # C56413 which installs as shown in the linked video.
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  • 2017 Ford F-150 Towed Change 4 pole to 7
  • I recommend using the Roadmaster 7-Wire to 6-Wire Flexo-Coil Kit # RM-146-7, simply cut off your current 4-Way and rewire with the 6-Way to provide the charge line for your towed using the Battery Charge Line Kit # RM-156-25. The Kit allows up to 15 amps from your RV's battery to be used to maintain the charge of your towed car's battery while the car is being towed. This Includes 14-guage wire, split wire loom, circuit breaker, and hardware. The kit is made in the USA.
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  • What All is Needed to Add an EZ Connector to a 2012 Expedition and Trailer?
  • Switching over to the EZ Connector Magnetic 7-Way # 319-R7-01 will lose the 4 flat connection. However, I do have a couple solutions for you. First will be the Trailer Connector Adapter # 319-R7-54. This will adapt a standard 4 flat to work with the # 319-R7-01. If you preferred to keep a 4 flat plug, it will be a little more complicated, but not overly so. To do this, you will need to splice a 4 flat, like the Curt # C58345, either into the # 319-R7-01 at some point, or where the...
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  • What is the Difference between the Hopkins Trailer Wiring Harnesses HM20041 and H20046?
  • There isn't really a lot of differences between the Hopkins 7-Way RV Style Connector with Molded Cable - 8' Long - RV Standard # H20046 and Hopkins 7-Way Blade Style Connector with Molded Cable - 8' Long - Auto Standard # HM20041. Both are 8 feet long and will fit in the standard 7 Way vehicle plug and even use the same gauge wires. However, it is actually the colors of the wires that are different. The # HM20041 will use the auto-industry standard: Black (12v Power), White (Ground),...
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  • Can Curt Echo Brake Controller be Installed in 4-Way/7-Way Adapter and Still Work
  • That's actually a really good question! All the Curt Echo # C51180 needs to operate properly are the basic trailer lighting functions (found on a typical 4-Way), and then 12V power. If you already have a 4-Way/7-Way adapter like part # C57672 then all you'll need to do is run a length of 10 Gauge Wire # 10-1-1 to a 30A Circuit Breaker # PK54530 and then to the positive battery post on your tow vehicle. If you don't already have an adapter then you can just get the Upgrade Kit # ETBC7L...
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  • How To Plug 1997 Lance Truck Camper Into 7-way Connector On 2016 Ford F-250
  • We have run into this quite a few times in the past, and the best option will be replacing the Lance 7-pin connector with a standard 7-way blade connector like the # PK12706. This will give you a standard 7-way connector to plug into the factory 7-way on your 2016 Ford F-250. There is not a adapter compatible with the connector on your 1997 Lance Camper as they use their own style connector that does not match any standard connectors. I included a video of the # PK12706 for you to...
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  • Can Redarc BCDC Charger Be Used with 7-Way Connector to Charge Trailer Battery
  • The Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D that you referenced could physically be installed so that it uses 12V power from the 7-Way connector on your truck, but it's not going to allow for ideal operation. The problem is that typical trailer connectors use smaller 10 gauge wiring that just isn't capable of allowing enough power to pass through to really charge a battery up. Since this is exactly what you would want to use the BCDC charger for, using it with the 7-Way...
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  • Adapting 7-Way Round Pin on Mack Semi-Tractor to 7-Way Blade Style RV Connector
  • A 7-pin connector on a Mack Tractor like you described would function a bit differently than a 7-way blade-style RV connector. The difference is the right and left turn pins on the 7-way blade also carry the signal for the brake lamps while on the 7-pin, one pin carries the right turn lamp, one the left and another carries the brake lamp signal. In order to combine those three signals onto two circuits, you'll need a taillight converter. There isn't an off-the-shelf adapter that'll do...
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  • How To Make 5' 6-way Round to 4-way Flat Wiring Adapter
  • I would be happy to help you make a 5' long 6-way round to 4-way flat adapter, but the longest premade adapter offered in this combination is the Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 6-Pole to 4-Pole # HM47320 which is only 5" long. To start you will need a trailer end 6-way connector # PK11604 and 5' of # DW04923-1. The # DW04923-1 is sold in a quantity of 1' so for 5' you will need to order a quantity of 5. You will need to make the following connections...
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  • What Ohms Should Trailer Brake Magnets Be?
  • Assuming that when you tested the resistance of the brakes you were testing the two wires on each magnet and getting 2.0 and 2.8 ohms the magnets on your trailer are not working correctly and will need to be replaced. For 7" brakes you should get 3.8-4.0 ohms, and for 10-12" brakes you should have 3.0-3.8 ohms. If the brake shoes themselves are good you can replace just the magnet using 7" # AKBRKR-M7, 10" # AKBRKR-M10, or 12" # AKBRKR-M12. If the shoes are needing replacement...
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  • Recommended Wiring Harness and Hitch For 2019 Chevy Bolt
  • For a wiring harness on the 2019 Chevy Bolt I recommend the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit part # 119250KIT which is a clamp on style wiring harness. There is not a custom plug and play option available for the Chevy Bolt but the wiring harness clamps to the vehicle wiring instead of splicing in so this is your best option. If you need a hitch, I recommend Draw-Tite Sportframe Trailer Hitch Receiver part # 24956 which...
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  • 7-Way and Brake Controller for International 4300
  • You'll need to use the # 119147KIT that you referenced to install first a 7-way on your dump truck and then to convert to a 7-way you'd just need the # 37185 or if you plan to install a brake controller # ETBC7. For a controller the Brake EVN # TK63VR would be a really easy solution as it works well, is reliable and has a great price.
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  • Installing 7-Way Trailer Connector in Bed of 2006 Chevy Silverado 2500
  • Assuming that the 7-way on the bumper is from the factory and the tow package harness can be unplugged from the rear of the connector, using a T-connector like # 41157 is what I'd recommend. Simply temporarily unplug the connection at the rear of the factory 7-way and plug the # 41157 inline as shown in the linked video.
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  • How To Use A 5 Pin Boat Trailer Adapter On A 2021 Genesis GV80
  • The 2021 Genesis GV80 may already have a 4 pin trailer adapter installed from the dealer and you can convert it to a 5-pin. If it does not have a 4 pin already, then you will need to install the Curt Tail Light Converter 4-Pole Flat Trailer Connector # C59236. This will splice into the taillight wiring on your vehicle, and there will be a few more wires to run (power and ground wires). I have attached a demonstration video for this kit. Once you have a 4-pin installed, you will...
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  • How To Install 4-way Trailer Connector In 2021 Toyota Highlander XLE Without Factory Tow Package
  • To install the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236 you were looking at for your 2021 Toyota Highlander XLE I recommend removing the trim on the inside of the hatch and mounting the converter on the driver side of your Highlander, and using a circuit tester like # PTW2993 to identify the correct wires to splice in to. Another option is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK99FR which is confirmed to fit your Highlander...
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  • Parts Needed to Wire Trailer With Electric Brakes
  • To add trailer brakes you'll want to start by adding a new 7 way trailer connector; for that I recommend using the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector # e99011, which will give you a 7 way and a way to install all of the wiring cleanly. You'll also need some 12 gauge wire, which is available by the foot with part # 12-1-1 and some butt connectors # DW05745-10 to make the connections to the wiring. Other than that, you'll just be making connections...
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  • Parts Needed to Install Brake Controller in 1989 Ford F-350
  • To install a 7-way and a brake controller in your 1989 Ford F-350 you will need the 7-way kit part # 20023 a brake controller like the Brake EVN # TK63VR and a little more wiring. For a wiring kit to install the brake controller to the 7-way you would want the Wiring Kit for 2 and 4 Brake Electric Brake Controllers # 5506. This will provide the power source and ground for the wiring for the brake controller. You will need to test the wires from the brake pedal switch of your vehicle...
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  • Trailer Wiring Harness Available for 2022 Lexus RX350
  • If your Lexus RX350 already has the tow package which provides the taillight converter that's plugged into the connector located behind the passenger side cargo area bulkhead as shown in the linked instructions, you'll just need the # 118252 which plugs into the connector located behind the rear bumper. If you don't have the tow package, you'll need the # 118255 which includes both the converter that plugs into the connector located in the cargo area but also the 4 pole connector that...
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  • How To Install a Brake Controller on 2017 Mercedes-Benz Sprinter 3500
  • You can hard-wire in a brake controller and it seems that there are not a lot of the Sprinter 3500 models that are pre-wired, at least from what I've seen in my research. I have not seen any reports that this isn't possible, and we even have an installation video to walk you through the process. The way to find out whether or not the plug is present by using a circuit tester like the # 40476 and testing for a hot wire when the brake is pressed- it's possible that one of the plugs that...
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  • Does Installation of Trailer Wiring Harness on 2020 Toyota Highlander Void Vehicle Warranty
  • Good question, and the installation of any aftermarket parts such as a trailer wiring harness will not void the warranty on your 2020 Toyota Highlander Hybrid, or any other vehicle. The reason for that is because you are protected by what is called the Federal Magnusson-Moss Warranty Act. This act says if something breaks on your vehicle and you take it in for warranty repair, the dealer must honor your warranty unless whatever you have added to your vehicle or its installation actually...
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  • Hitch Receiver for a 2018 Tesla Model 3
  • I would be happy to help you find a hitch for your 2018 Tesla Model 3. I have a solution for you that will get here a lot quicker. The reason you can't find the EcoHitch Stealth Trailer Hitch Receiver item # 306-X7373 is because it is currently (2/19) out of stock and back ordered until at least the beginning of summer. Instead of waiting I recommend going with the Curt Trailer Hitch Receiver item # C45FR. This hitch has a 2" receiver and is custom fit to bolt to your Tesla with included...
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  • How To Power Trailer Lights From a 2015 Mercedes-Benz GL-550 Without Tow Package
  • In order to power the trailer lights on a 2015 Mercedes-Benz GL-550 without tow package you will first need to start with a basic four way trailer wiring harness. The ZCI Circuit Protected Vehicle Wiring Harness part # 119250KIT is what I recommend since it is the only option for this vehicle that does not require splicing. However, if you are okay with splicing and looking to save some money then the Curt Powered Tail Light Converter part # C59236 will still work. The above will then...
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  • What Circuits Of The 7-Way Blade Connector Are Required To Use a Curt Echo Trailer Brake Connector?
  • A reverse circuit wire is not required for the Curt Echo Wireless Trailer Brake Controller # C51180 to operate correctly. It only needs to get power form the charge line/auxiliary circuit of the 7-way and see signal from the brake lights (the brake lights are a combination of the left and right turn signals operating at the same time, because of this do not use your hazard lights with a Curt Echo installed). Your trailer will only require that the reverse lights portion of the Curt...
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  • Parts Needed to Add Wiring for Trailer Lights and Brakes
  • I recommend using the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector # e99011 to start off. This gives you a 7-Way connector and a clean and organized way to connect all of your wiring. Then for the wiring for your lights I recommend using the Wishbone Style Wiring Harness # A25W2GWB. This is 25' long which will give you enough for the length of your 16' trailer plus some extra wiring to make sure you have enough to connect all of your lights. You will...
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  • Does 12-V Trailer Connector Circuit at 7-way on 2017 Ford F350 Remain Active With Vehicle Running
  • Once the trailer is plugged in and the brake pedal is depressed, the 12-volt power circuit on the trailer connector will become active, and can be used for whatever purposes you wish. Keep in mind that this circuit can maintain a trailer battery, but it won't have the available grunt to charge a discharged battery. To fully charge the battery while the tow vehicle is running, you'll need a DC to DC charger like # 331-BCDC1240D for a 40 amp or # 331-BCDC1250D for a 50 amp charger. If you...
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  • Parts Needed To Tow a Trailer With a 7-Way Connector Behind a 2022 Toyota RAV4 Hybrid
  • Yes, the Curt Trailer Hitch Receiver # C13416, Curt T-Connector Vehicle Wiring Harness # C56434, and Curt Trailer Connector Adapter # C57672 are what you need to tow with your 2022 Toyota RAV4 Hybrid. I do recommend the Universal Installation Kit for Trailer Brake Controller # ETBC7 over the Curt Adapter # C57672 as the installation kit contains the wiring and circuit breakers you will need to run power for the charge line and add a Brake Controller # RED52VR. The etrailer Ball...
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  • How to Install a 7-Way Wiring Harness on 2013 Lexus RX 350 for Powered Bike Rack
  • In order to install a 7-way on your 2013 Lexus RX 350 you will need to start by adding a 4-way wiring harness. If you do not have the factory tow package, you need the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT. This will clamp onto your existing wiring so no cutting or splicing is required. If you do have the factory tow package, you can use the Tekonsha T-One Vehicle Wiring Harness # 118255 instead. This plugs into...
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  • Wiring Needed To Install A Curt Echo and Curt 7-Way With Backup Alarm On a 2016 Kia Sportage
  • The first step will be completing the installation of the Curt Trailer Connector Adapter with Backup Alarm # C57102 on to your 2016 Kia Sportage. You will need enough 12 Gauge Wire # 12-1-1 to run from the 7-way to where you will be tapping into the battery 12 volt source. This is sold by the foot so remember to account for all the bends along your Sportage to get it to your battery source. A Deka Ring Terminal # DW05741-1 will help you to connect to your power supply. The best way...
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  • Parts Needed to Install 7-Way Wiring on a 2014 Audi Q5
  • While there are no plug and play type 7-Way connectors for your 2014 Audi Q5, we still have the parts you need to get a 7-Way installed so you can tow your trailer. To start off you need the 4-Way and for that I recommend going with the Tekonsha ModuLite # 119190KIT or the Tekonsha ZCI # 119250KIT. The ModuLite is a standard splice-in type of installation while the ZCI uses special connectors that clip over your OEM wiring and prevent you from having to cut into any OEM wiring. Both...
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  • 10' Long 7-Way Cable With Double Ended Trailer End Connectors
  • I have a couple options for you as we do not have the Bargman 7-Way Molded Trailer Wire Connector # 50-67-210 in a 10' length. First you can take a 7-Way Molded Connector w/ 10' Cable # 50-67-005 and add a 7-Way RV Style Trailer Connector # A10-7081VP. Or you can connect 2 Hopkins 7-Way RV Style Connector w/ Molded Cables # HM20086 together if you prefer to have the molded and sealed ends.
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  • Troubleshooting 7-pole Round to 4-way Flat Adapter Not Powering Brake Lights
  • I would be happy to help! The 7-way round to 4-way flat adapter like the # 118709 is designed for 7-way round connectors that have combined brake and turn signal wires. Based on the issue you are having your connector more than likely does not have combined brake and turn signals, so you will need to make your own adapter. You will need to use the 7-way round connector # PK11702, wire # DW04906-1, 3-wire to 2-wire converter # HM48847, and a 4-way flat connector # HM48190. To...
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  • How to Tell if Replacement Controller For Solera Smart Arm Awning is Needed
  • I'm sorry to hear about the troubles you are having with your awning, and you're right about the design; it certainly seems flawed if the AC water gets blown right toward the controller. From what you described, it seems very likely the controller is bad, but what you can do to check is use a circuit tester like # PTW2979 to test that there is power going to the controller. If there is, and the controller is not working, you will need the replacement: - Replacement Controller and...
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  • Trailer Hitch Receiver For 2019 Honda CR-V & Wiring to Add 7-Way For Curt Echo
  • We can get your 2019 Honda CR-V set up with a hitch and the necessary wiring, and you will need a 7-way in order to add electric brakes and use the Curt Echo brake controller. You'll actually need both a 4-way (for the trailer lighting functions) and will plug that into the 7-way, which gives you the needed wiring for the electric brakes. Let's go ahead and start with the hitch and wiring: - Curt Trailer Hitch Receiver # C13397 - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer...
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  • Recommended Trailer Hitch Receiver and Wiring Harness for 2014 Chevy Camaro
  • We can get you the whole package for your 2014 Chevy Camaro, and let's start with the best hitch, which is the Draw-Tite Trailer Hitch Receiver # 24850. The Draw-Tite is easily the best option because unlike other hitches for your Camaro it does not require you to drill into your frame for the installation, which is good for the vehicle and also makes for an easier install. Then for the wiring harness, the correct fit is going to depend on if your Camaro has LED taillights or not....
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  • Will a Wiring Harness From a Tesla Model Y Also Fit a Model 3?
  • The Tekonsha harness you referenced, our part number # TK56FR, is specific to the 2021 Tesla Model Y, so I cannot recommend it for your 2020 Model 3. With that being said, we do have a few options available for your vehicle. First will be the Tekonsha ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT. Other than a wire that will need to run to a battery, this will require absolutely no cutting or splicing to install. This can be a bit of a difficult install though, so I included...
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  • Truck Bed Wiring Harness For 2019 Ford F-250 Super Duty For Slide-In Camper
  • To connect to the plug on your 2019 Ford F-250's truck bed camper, what you will do is use a 5th wheel/gooseneck wiring harness. The best location really depends on the camper, but most find positioning the harness towards the rear of the bed (closer to the tailgate) to be difficult because of limited clearance, so further forward in the bed would be the better option. For that you'll want a longer, 10 foot plug-in harness: - Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector...
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  • Recommended Brake Controller and 7-Way Connector for a 2022 Subaru Outback Premium
  • Since your Tear Trailer has a 7-way connector you will need a brake controller and a vehicle 7-way connector on your 2022 Subaru Outback Premium. Lets start with the 7-way connector. There isn't one that is custom fit for your Subaru so you will have to go with a universal option to add on to your Subaru's 4-way. If you don't already have a 4-way connector you will need to add one first. The Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 118467 is custom...
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  • Recommended Trailer Wiring Harness for a Boat Trailer
  • The Optronics 25 foot 4 Way Wire Harness # A25W2GWB will be a good option. This will generally have enough length to cover most trailers. I will also recommend adding in a few of the Spectro Self-Stripping Connector with Waterproof Sealant # SWC501746-1. These will make splicing into the # A25W2GWB significantly easier. Especially for your side marker lights.
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  • Does Adding Trailer Hitch to 2018 Chrysler Pacifica Hybrid Void Warranty
  • Adding a trailer hitch receiver to your 2018 Chrysler Pacifica Hybrid will not void your warranty because you are protected by what is called the Federal Magnuson-Moss Warranty Act. This act says if something breaks on your vehicle and you take it in for warranty repair, the dealer must honor your warranty unless whatever you have added to your vehicle or its installation actually caused the problem in question. I do recommend checking your owners manual for capacities and abiding...
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  • Surge Coupler Equipped Trailer Brakes Occasionally Actuate When Backing Trailer
  • When the brakes lock up, are you backing up a small hill or a rise? I'd be willing to bet you are. It sounds like your surge coupler isn't equipped with a reverse lockout. A reverse lockout will prevent the coupler from compressing and actuating the brakes when you back the trailer. There are a couple possible solutions for this. Depending on the surge coupler you have, it could be possible to install an electric lockout like part # T4748800 for Titan or Dico surge couplers or #...
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  • Correct Curt Trailer Wiring Parts for a 2022 Mazda CX-5
  • The Curt Upgraded Circuit Protected Powered Tail Light Converter # C56496 along with the Powered Converter Wiring Kit # 55151 are what you need to add wiring to your 2022 Mazda CX-5. Sometimes our fit system needs adjustments made and this is one of those times. You're good to go with these parts! If you're looking for a complete towing setup then I also recommend checking out the etrailer Hitch # e98902 because of the durable matte black powder coat and then the ball mount kit # EBMK4...
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  • 7 Way Connector for 2018 Subaru Crosstrek with Factory 4 Way Connector
  • In order to add a 7 way connector to your 2018 Subaru Crosstrek you'll want to use the Curt Trailer Connector Adapter # ETBC7 which will plug into your existing 4 way connector on your Subaru. If you only need the lights to function on your tear drop trailer, you won't need to connect any of the other wires, but if your trailer has brakes you'll want to continue reading. If your teardrop trailer has brakes, you'll want to add a brake controller and connect the loose wires on the # ETBC7...
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  • Is There a Trailer Wiring Harness Option for a 2013 Chevy Volt
  • I do have an option for you though there are no confirmed trailer wiring harness options for a 2013 Chevrolet Volt as the vehicle is not designed to tow a trailer. That said, there are still universal trailer wiring harnesses that may work like the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness with Installation Kit part # 119190KIT which will be your best shot.
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  • What Size Wire Gauge Do 4 Pole Connectors Use
  • The Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector # HM38134 you referenced has 18 gauge wires for the brown (taillight), green (right turn and brake), and yellow (left turn and brake) wires. The white (ground) is a 16 gauge wire. Typically 18 or 16 gauge wire is sufficient to run trailer lights, especially when you use LEDs since they draw much less power than incandescent bulbs. For similar trailer connector that has all 16 gauge wire the Wesbar 4-Pole Flat Connector...
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  • Install Instructions for Trailer Wiring That Fits 2020 Kia Soul
  • You have the universal Curt trailer wiring harness that fits your 2020 Kia Soul with part # C59236 which we do have the easier to install kit part # C89KR which would have been my recommendation for you. But the type of taillights your 2020 Kia Soul has is separate so that would be the set of instructions you should follow in the install instructions that I have attached to this page.
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  • Recommended Trailer Hitch, Wiring, and Brake Controller for 2015 Audi Q7
  • It looks like you have really done your research on this, great job! For a hitch you are correct, the Curt Trailer Hitch Receiver # 13220 is a confirmed fit for your 2015 Audi Q7. This Class III hitch has a 2" receiver and a concealed cross tube to help maintain a factory look. It has a maximum gross trailer weight of 6,000 lbs and tongue weight of 600 lbs. Make sure to consult your owner's manual for the towing capacity of your vehicle as well, you will be limited by whichever is lower. For...
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  • 5-Way Wiring Harness For 2017 Audi Q7.
  • Hi, if there is no hitch installed on your 2017 Audi Q7 I suggest the Curt Class III Receiver Hitch # C13277. It has a 700 pound tongue weight and a 7000 pound towing weight. The harnesses we have for this Audi all have powered converter boxes. This is to protect the vehicle's wiring and also keep the trailer from drawing to much of the vehicle's power. I would use the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT paired...
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  • Is Wishbone 4-Way Required for Trailer With 4-Way but 5 Wires
  • Yes you should! You are on the money with what you need, a wishbone-style 4-way wiring harness for your trailer. With this style, the white is ground, yellow is left turn/brake, green is right turn/brake, and the two brown wires are the running light wires. I'm not sure the length you need though, or if 35 feet might be too long, which is the length of the 4-Way Trailer Wiring Harness - Wishbone Style # A35W42B. We do have different lengths available, which I'll list for you just in...
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  • How to Power Small 12V Air Compressor Using Trailer Connector
  • We do indeed have an adapter that will convert your 7-way to a 12V power outlet. You'll need part # PK11896. Or if you'd prefer something a bit more permanent, you could install something like # DG6112VP in the inside wall of the truck bed and simply tap it into that 12 volt feed to the trailer connector.
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  • Troubleshooting Wire Placement On A 7-Way Molded Connector
  • When it comes to getting a plug that has the same functions is very uncommon. Each trailer wiring is wired different and each wire has a different function. I recommend The Circuit Tester Kit # 40376. The kit will be able to test every function on your trailer so you can match the wires to the correct spots. I attached a review video link below.
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  • Recommended 6-Way to 6-Way Coiled Flat Tow Umbilical Cord
  • It sounds like you're looking for the RoadMaster 6-Wire Flexo-Coil Kit part # RM-146 which comes with the adjoining connectors as well but these can be saved for future use or discarded. The umbilical however is not offered without these adjoining connectors. In regards to safety cables, I recommend the RoadMaster 68" Single Hook, Coiled Safety Cables part # RM-643. If you need longer you can add extensions, RoadMaster 8" Safety Cable Extensions part # RM-910648-8.
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  • Can 4-Way be Spliced Into Trailer That Has 7-Way
  • If you don't want to use a vehicle adapter like the Mighty Cord Trailer Connector Adapter - 4-Way Flat to 7-Way RV Style # A10-7084VP on your vehicle with a 4-way to adapt it to your trailer's 7-way, then yes, you can splice into your trailer's wiring to add a 4-way if your like. You can use the trailer side connector you mentioned, the Hopkins Endurance Easy-Pull Harness with 4-Pole Flat Trailer Connector # HM38136. To splice it you can connect your wires with the Deka Heat Shrink...
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  • Comparing the Bargman 7-Way RV-Style Connector to Hopkins 7-Way Trailer Wire Connector
  • The only difference between the Bargman # 50-67-005 and # 54006-059 is the insulation. The # 54006-059 has heavy silicon insulation that is rated for use in temperatures as low as -67 F. As for the connection on the Bargman vs. the Hopkins # HM20048 it is going to provide the same connection, there is no real difference aside from the style. The only difference you will find overall is that the Hopkins has a length of 11' while the two Bargman connectors have a length of 10'. I have...
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  • How To Tow a Gooseneck Trailer with Brakes Using a Semi Tractor
  • In order to haul your gooseneck trailer with a fleet of semi-tractors you will need to make your own adapter harness which will then make for a plug and play connection but they don't make anything pre-assembled for this out of the box to my knowledge. In order to make the adapter you will need the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector part # PK11700, the Roadmaster Brite-Lite Wiring Converter part # RM-732, and the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer...
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  • Wire Functions of Triple LED Trailer Tail Light CE44VR
  • While we wouldn't have any way of knowing what the 8 wires are for with your current light, I can tell you the functions of each wire for the Triple LED Trailer Tail Light # CE44VR. Then what you would need to do is match those wires with the correct ones on your RV, and you can find out what wires are for what function on your RV by using a circuit tester like the Cordless Circuit Tester # PTW2979. After that it would just be a matter of matching the wires by function (and not color),...
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  • Trailer Plugs Compatible with 1 and 2 Pole Pollak Trailer Sockets
  • Both trailer connectors you speak of are sockets that would typically be used on the vehicle end of the trailer/vehicle connection. One is a one pole, the other a two pole so they wouldn't be compatible with each other. The Pollak # PK11851 is a single pole wiring socket, which would be compatible with a # PK11852 single pole plug The Pollak # PK12801 2-pole socket would be compatible with a 2-pole plug, part # PK12800.
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  • Replacing Trailer End 4-Pole Connector That Has 8 Wires
  • For starters, a quick-fix type connector shown in your photo is typically a good choice for an emergency repair, but I wouldn't use it as a permanent fix. It looks like your trailer wiring has 3 separate grounds and 3 separate running lamp circuits for some reason. This is kind of a strange setup, but if everything worked fine beforehand, there really wouldn't be any need to change that at this point. Your suspicion is correct, I don't believe all those wires will fit in there either. For...
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  • Trailer Hitch Receiver Fit on 2001 BMW 325 Convertible
  • There is a single trailer hitch receiver that fits your 2001 BMW 325 convertible, so it's what you'll need to purchase, and that's a hitch from Curt. The correct fit is the following part number: - Curt Trailer Hitch Receiver # C11178
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  • How To Convert a 4-Way On a 2017 Jeep Renegade To 7-Way for Trailer with Brakes
  • In order to convert a 4-way on a 2017 Jeep Renegade so you can tow a trailer with a 7-way way that has electric brakes you will only need a few things, a 4 to 7-way adapter and a brake controller. I have two great options for the adapter and brake controller but I highly recommend going the wireless route. The wireless route only requires very minimal installation and far less modifications to the vehicle which is why I recommend this option though it will set you back a bit more than the...
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  • Vehicle Wiring Harness For a 2021 Toyota Sienna.
  • Both the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness # 119190KIT and ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT are universal kits that will work on most all vehicles. You can use either of these on your 2021 Toyota Sienna. These kits both use powered modules to reduce the additional power pulled through the vehicle harness. There for it will not void your warranty. I recommend using the Tekonsha T-One Vehicle Wiring Harness # TK69FR as this is...
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  • My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
  • If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part # C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give you trailer light functions. If your trailer has a 7-pin connector, then it likely has electric trailer brakes and an onboard battery. If you want a fully functioning 7-way trailer socket on his vehicle, then the installation will be a bit more...
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  • What Towing Setup Would Work For My 2012 Mercedes Sprinter
  • When installing there is a few parts you would need to start the installation. For the vehicle side you would need to start with part # 118650 which would give you the beginning 4 flat plug. From the 4 flat plug you would need part # ETBC7 which would make the 4 flat into a 7 round, and also giving you the additional wiring needed to activate your trailer brakes. On the trailer side part # e99011 would provide the attachment to plug into the ETBC7. For the brake controller part # TK90160...
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  • Trailer Hitch Receiver Fit For 2021 Lexus RX 450h
  • We do have a trailer hitch receiver that is a fit for your 2021 Lexus RX 450h. I was able to confirm with Draw-Tite that they do have a hitch which fits your '21 RX 450h, which is the following: - Draw-Tite Max-Frame Trailer Hitch Receiver # 75540 I have added a link below to the installation instructions for you to check out as well if you'd like. And if you plan on doing some towing and need a wiring harness for your 2021 Lexus RX 450h, we have that as well with the ZCI Circuit...
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  • Replacement Blue Ox 6-Pole Wiring Socket For Flat Towing Your Vehicle
  • You can find the BX88413 with part # BLU43XR. If you need any other components to finish your flat towing setup or replacing any damaged parts you have then just let me know the year/make/model of your vehicle and I can offer some recommendations for you.
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  • Connecting 3rd Brake Light of Truck Camper Shell to 2013 GMC Sierra Wiring Harness
  • For connecting your truck shell 3rd brake light on your 2013 GMC Sierra 1500 I recommend adding the Tekonsha T-One Vehicle Wiring Harness # 118384. This will allow you to be able to unplug the wiring that will go to your truck shell if you need to remove it from the truck. It will also not require you to splice into any of your vehicle wiring. To this you will need the Wesbar 4-Pole Flat Connector # W787268 to allow you wiring up to your 3rd brake light. You will then be able to wire...
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  • Brake Controller Installation on 2018 Toyota Highlander
  • You'll need to choose a brake controller and the # ETBC7 brake controller installation kit. The install kit includes an adapter to convert the 4 pole you recently installed to a 7-way. I'd recommend a proportional controller like the Tekonsha Primus, part # TK90160. Your Highlander is very sensitive to power feeding back into the brake lamp circuit, so instead of the pigtail included with the Primus, you'd need to use the # 7865 which has a diode installed on the brake lamp circuit to...
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  • Recommended Trailer Wiring For A 2016 Volkswagen Tiguan
  • When it comes to installing a trailer wiring harness on your 2016 Volkswagen Tiguan without knowing actually which wire you have I am not sure what part you're needing the wire you're discussing is for a break controller so it sounds like you were sold the wrong part. I would recommend The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # CU26FR which comes with everything needed to adapt the wiring harness on your vehicle. The harness provides a 4-way flat...
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  • Trailer Wiring Harness for a 2023 Kia Sportage
  • You can use the Upgraded Heavy Duty ModuLite Circuit Protected Vehicle Wiring Harness # 119190KIT in your 2023 Kia Sportage. I have included a link to the installation instructions. But, you are correct that the long green wire will need to be routed over to the right light.
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  • Recommended 7-way Connector Extension For 2018 Toyota 4Runner
  • I have another option for you, but the Trailer Connector Adapter w/ Lamp-Out Sensor Bypass - 7-Way RV to 7-Way RV - Vehicle End # 20142 has built in resistors for vehicles with a lamp-out error and and since the lights are working properly when plugged in to your 2018 Toyota 4Runner, you do not want the increased resistance in the wiring. Instead I recommend the TorkLift Wiring Harness Extension for 21" SuperTruss Hitch Extender - 7-Way RV # TLW6021 which is the shortest standard extension...
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  • Can 7-Way Be Added to Freightliner Semi Truck
  • We can help with a basic 7-way and wiring but we do not have anything that's going to actuate ABS brakes. You can hardwire in a 7-Way, # HM47210 though. For this 7-Way the white wire is ground, yellow is left turn signal and brake lights, green is right turn signal and brake lights, brown is the tail light wire, red is auxiliary power, blue is output to electric brakes, and purple is reverse lights. If the turn signals and brake lights are not combined on the same circuits then instead...
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  • Wiring Adapter For Towing a Motorcycle Trailer 6-Way Square Connector With A Flat 4-Way Tow Vehicle
  • You will want to use a 6-Pole Square Trailer Wiring Connector Kit # 37995, a Hopkins Endurance 4-Way Flat Trailer Connector # HM48110 and a Curt 2 to 3 Wire Tail Light Converter # C56196 to create a custom wiring adapter. First you will want to use a Test Light # PTW2993 to test your wiring of the 05 Bunkhouse Motorcycle Camper. This will help you to determine which wires will connect to what on your 4-way connector or the converter. You will need a Curt 2 to 3 Wire Tail Light Converter...
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  • What Replacement 6-Way Female to Female Power Plug do I Need for My Flat-Tow Setup?
  • I have a plug for your needs. Unfortunately, the only 6-way female to female cable we carry comes with the RV and vehicle plugs. That is the Blue Ox 6-Wire, Coiled Electrical Cord with 6-Way, Round Plugs # BX8862.
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  • Brake Controller Recommendation For A 2019 Mercedes GLS
  • Yes you will need a brake controller to tow your RV as you did with your Toyota 4Runner to provide safe braking. If you have your previous brake controller from your 4Runner, you could install it in your GLS 450 with a new wiring harness. I would be happy to recommend one if you can let me know what model controller you have. If you need a new brake controller and your Mercedes GLS 450 already has the 7-Way connector, the Curt Echo Mobile Trailer Brake Controller # C51180 is my...
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  • Wire Gauge Size of the 40 Ft 5-Way Trailer Wiring Harness A40W5B
  • The 40 Ft 5-Way Trailer Wiring Harness part # A40W5B uses 20 gauge wire according to Optronics. This is pretty standard and will work for the vast majority of trailers without issue.The Wesbar 5-Pole Flat Connector part # W002290 uses larger 16 gauge wire if that is what you are looking for.
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  • Brake Controller Install in Motorhome on 2005 Ford E-450 Van Cutaway Chassis
  • Other than the physical difference, a 7-way carries one extra circuit which is typically used for reverse lamps. If you don't need that feature, you could simply use an adapter like # 47435 which would convert your existing 6-way to a 7-way. Your cutaway van chassis should have been prewired from the factory to install a brake controller. There should be a connector under the dash near the e-brake pedal as shown in the provided photo. If the connector isn't there, let me know and we'll...
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  • Solution for Needing Vertical 2-Way Trailer Connector
  • You might be able to look at the manufacturer of the connector on the lid to see if you could contact them. Or you could keep the # 337TC2012 and instead replace the female connector you have now with the part # 337TC1012 which matches.
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  • Solution to Allow Trailer Running Light Circuit to Function on 2019 GMC Sierra 1500
  • The trailer wiring on the newer trucks like what you are experiencing on your 2019 GMC Sierra 1500 and the new Ford trucks with the "smart tow" package are proving to be challenging for reasons like what you found where the truck doesn't want to show a trailer connection. The easiest solution you'll have will be the 7-Way Trailer Adapter # C57003 which was designed for German vehicles towing trailers with LED taillights that has load resistors built into it. Basically you'd install...
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  • Replacement Junction Box for etrailer 7-Way Upgrade Junction Box Kit
  • I wonder if the box was stressed in some way when bolting it to the trailer. Maybe one of the install bolts was pulled the box in a direction that stressed it. That said, for just the box you'd want the part # 3375601101 which is an exact replacement for what comes with the # e99011.
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  • Converting to Electric Trailer Brakes From Hydraulic on 3,500 lb Axle
  • Yes, we can get your set up to go from hydraulic to electric brakes, and your photo (thanks so much for that) shows you have a 10 inch brake drum. So here is everything you'll need in order to switch: - Electric Trailer Brake Kit # AKEBRK-35-SA - Mounting Hardware for 10" Brake Assemblies # BRKH10B - Deka Jacketed 2 Wire, 10 Gauge, Brake Wire - per Foot # 10-2-1 - Bright Way Push-to-Test Trailer Breakaway Kit # 3802308 - Deka Heat Shrink Butt Connector - 12-10 Gauge # DW05745-5 The...
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  • Parts Needed to Connect Gooseneck Trailer to Semi-Truck 7 Pole Round Plug
  • You can use the Pollack # PK11700 to install on your gooseneck trailer and create a 7 way plug capable of fitting on the 7 pole round plug that is on a semi tractor trailer truck. For the wiring you can use the Deka Jacketed 7 Wire # DW04914-1 which is a jacketed 7 wire sold by the foot that will allow you to connect to your trailer's wiring and the plug. If you just want to go the adapter route, you can use the Pollack # PK12-724.
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  • Looking to Adapt a 6 Round Vehicle Plug to 7 Blade Trailer Plug
  • The Hopkins 6-Pole to 7-Pole Trailer Wiring Adapter # 47435 will definitely work as an adapter, but you will indeed have no reverse lights. I do also need to mention that the 6 Round style plug is not going to be a very common style so it may not be a bad idea to upgrade it to a standard 7 Blade. The Hopkins 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 will require some cutting and splicing to get installed, but will match the 7 Blade on...
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  • Trailer Wiring Harness Fit for 2022 Ford Bronco Sport
  • For the 2022 Ford Bronco Sport, I'd recommend the Tekonsha # TK46FR trailer wiring harness. The unit plugs inline at the connection between the taillight assemblies and the factory wiring harnesses. You'll also need to run circuit to the positive battery terminal to power the taillights. I'll link to a help article that explains how to run that circuit to the battery. If you don't have a hitch yet, I'd recommend the Curt Class III hitch, part # C76HR. You'll also need a ball mount like...
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