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Tow Bar Wiring > 2013 > Jeep > Wrangler

TrailerMate Tow Bar Wiring for the 2013 Jeep Wrangler

TrailerMate Tow Bar Wiring

ratingratingratingratingrating (12 reviews)

Code:   TM781124



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TrailerMate Custom Tail Light Wiring Kit for Towed Vehicles - 2013 Jeep Wrangler

Quickly and easily connect your towed car's lighting system to your RV to activate the signal lights required for towing. This custom harness plugs directly into your Jeep Wrangler's existing wiring - no cutting or splicing required.


  • Lets you connect your RV's tail, brake and turn signal lights to your towed Jeep Wrangler's lighting system
    • Provides 4-way flat plug at front of towed car to connect to motor home
  • Plugs in quickly and easily - no cutting or splicing of wires
    • Connection points are located behind your Jeep Wrangler's tail lights
  • Helps prevent damage to towed car's electrical components caused by electrical feedback
    • Built-in diodes safeguard car's wiring
  • Won't interfere with electrical system when towed car is not hooked up to RV
  • Provides connection point for 4-pole flat wiring harness (TM85330 - sold separately) at rear of towed car
    • Tow a trailer behind your car when it's not being flat towed
  • Custom designed for your Jeep Wrangler
  • Includes wiring harness, mounting bracket and 4-flat extension loop for hookup
    • Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system
  • Limited lifetime warranty

Wiring Your Vehicle with TrailerMate

Typically, wiring your car for flat towing is a tremendous chore. You have to position and mount multiple diodes beneath your car and then splice into the car's wiring. Before cutting and splicing, though, you have to use a circuit tester to identify each wire. This must be done for the wires carrying signals from your running lights, brake lights, and both turn signal lights. And don't forget to jump the diodes so that the running light signal is sent to both sides of your car. could just plug in the TrailerMate wiring harness. This custom-fit system plugs into your Jeep Wrangler's existing wiring harness, which is located behind your car's tail light assemblies. No cutting, tapping or splicing is required. The wiring around the plugs is encased in durable convoluted tubing, making it easier to handle and safer to route as well.

After plugging in the wiring harness, use the included bracket to mount the 4-way flat connector at the front of your towed car. Then hook up to your RV with the supplied wiring extension, and you're good to tow. Note: The extension included with this system requires that your RV have a 4-wire flat trailer connector. If your RV has a 7-pole round connector, or another type of connector, then an adapter is required.

Do You Need a Brake Light Relay?

Because your Jeep Wrangler has a combined lighting system - wherein the brake signals and the turn signals are carried on a single wire - a brake light relay (RM-88400 - sold separately) may be required if you use a supplemental braking system with your towing setup. A supplemental braking system depresses the brake pedal in your towed car every time you apply the brakes in your RV. So, if your towed car's brake lights illuminate when the brake pedal is pressed and the engine is off - as is the case when towing - then you need to install a relay to ensure that the lights on your towed car always act in accordance with the signals sent by your RV via the wiring harness. Without a relay, the brake signal from your towed car will override the turn signal sent by your RV when you slow down to make turns, creating a potential hazard.

T-Connector Function for Towing a Trailer

When you're not flat towing your car, the TrailerMate wiring harness can remain on your Jeep Wrangler; it will not interfere with the electronics. And if you ever tow a trailer with your car, you'll be wired and ready. The TrailerMate system comes ready to accept 4-flat wiring (TM85330 - sold separately) at the rear of your Jeep Wrangler so that you can hook up a trailer quickly and easily. Just plug in the add-on 4-way trailer connector, and you're good to go.

781124 TES Trailer Mate RV Tow Harness for Towed Vehicles

Video of TrailerMate Custom Tail Light Wiring Kit for Towed Vehicles

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video install base plate wiring 2012 jeep wrangler tm781124
TrailerMate Tail Light Wiring Kit for Towed Vehicles Installation - 2012 Jeep Wrangler

Video Transcript for TrailerMate Tail Light Wiring Kit for Towed Vehicles Installation - 2012 Jeep Wrangler

Customer Reviews

TrailerMate Custom Tail Light Wiring Kit for Towed Vehicles - TM781124

Average Customer Rating:  ratingratingratingratingrating4.8 out of 5 stars   (12 Customer Reviews)

- TM781124

ratingratingratingratingrating by: Jim C03/31/2014

Is this review helpful?

Etrailer has the best customer service of any company I have dealt with in several years. I received a call from etrailer that the wiring harness was back ordered and the company that made the harness could not give a shipping date. I was offered to change to another harness (Hoskins) but I decided to go with the TrailerMate since I had prior experience with that brand. I was kept informed all through the ordering process and received the wiring harness in about two weeks. The TrailerMate harness is very easy to install and worked perfectly. The instructions are clear and made the installation easy. There are two way to run the wiring from the rear of the vehicle to the front. Since I was installing on a 2014 Jeep Wrangler that will be going off road. I wanted as much protection as possible on the wiring. I opted to run the wiring through the frame rails. The instructions say to use a fish tape and pull the wire. Since I didn’t have a fish tape and didn’t want to buy one for a one time use. I used an old 12 ft metal carpenters tape. There is an opening near the rear where the wire comes from the harness and another near the front driver’s side wheel. Run the tape through the front opening to the rear (you will probably have to giggle it around to get it over the rear part of the frame). At the rear opening pull the tape and fasten the harness wire to the ruler tape and then pull the tape to the front of the frame where to can route the wire to the front connection point. 123105

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ratingratingratingratingrating by: Terry N.12/19/2013

Is this review helpful?

In general I am very pleased with the product and installation information. Some of the installation information could be more defined. such as were to run the wiring after it come out of the frame rail. The wires that run between the rear tail lights could be about 12 inches longer. I do have a question as well; when I ordered the kit I asked if the harness provided blocking diodes within the harness and was told it did. I have not connected it to my RV yet and wanted confirmation about that? If it doesn't I just wasted 75 Dollars on my purchase because I will then have to modify the circuitry to prevent an electrical problem from occurring!110596


The diodes are built-in. If you cut back the plastic wire loom, you can see where the are splice and heat-shrinked in line. Typically, they will be found closed to the tail light connectors.

Patrick B - 12/20/2013


- TM781124

ratingratingratingratingrating by: Larry L08/06/2013

Is this review helpful?

Great product, no wiring or splicing to do, just plug it in and it worked the first try, It was a little tough routing it through the frame and then feeding it around the engine compartment where it would be safe, cutting the hole near the right tail light required some special tools that some folks might not have? I'm a retired Flight Test Mechanic so this was a piece of cake for me. Sense it's all hidden behind the tail lights and in the frame, photos of the finished job won't show much 93575

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ratingratingratingratingrating by: Terry Bryan04/06/2014

Is this review helpful?

Great kit - simple and easy to follow i nstructions123938

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ratingratingratingratingrating by: John N02/04/2014

Is this review helpful?

All went well, just followed the instructions for installation and it was pretty much a snap. Product was put together such that everything fit without any need for adjustments. Very good product115762

- TM781124

ratingratingratingratingrating by: TOM M10/30/2013

Is this review helpful?

The product was exactly as shown and very easy to install. Also, the employees at etrailer were the most pleasant and efficient that I have ever dealt with. Thank you, etrailer staff.105732

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ratingratingratingratingrating by: Jeff A.08/02/2013

Is this review helpful?

Nice product. I have a larger order coming to you. Free shipping a plus!92974

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ratingratingratingratingrating by: Samuel04/08/2013

Is this review helpful?

wireing harness work out really good everything was perfect thank you74806

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ratingratingratingratingrating by: Jeff B.04/08/2013

Is this review helpful?

The kit was very easy to install, and works great, the connecter wire from the jeep to the motorhome was to short needs to be about 2ft. longer. 74721

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ratingratingratingratingrating by: Larry01/28/2013

Is this review helpful?

This is a great product it was easy to install and it worked perfectly. It would be worth it at twice the price. Thank you Larry Thomas 64293

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ratingratingratingratingrating by: Dave K.10/13/2012

Is this review helpful?

Great product. Easy to install and works perfect. The step by step instructions were easy to follow. 57125

- TM781124

ratingratingratingratingrating by: Ron Maitland10/12/2012

Is this review helpful?

Got the shipment 2 days after placing the order. I have the jeep in the shop right now getting it wired. Everything seemed in order. I am pleased with my ordering experience.57038

Ask the Experts about this TrailerMate Tow Bar Wiring
Expert Answers about TrailerMate Custom Tail Light Wiring Kit for Towed Vehicles - TM781124                                          Do you have a question about this Tow Bar Wiring?

  • Parts Needed to Flat Tow a 2002 Honda Odyssey Behind a Motor Home
  • In this case the tow bar wiring options for other Honda models are not interchangeable with your 2002 Honda Odyssey. There are still options that are easy to use. If you are looking for something that is easy to install then I recommend a magnetic kit such as # C-ATL20A. If you are looking for a more permanent installation then it is going to require splicing into the vehicle wiring and installing diodes using 6-diode kit # 154-792-118158. I have included a link to the installation details f
    view full answer...

  • Can TrailerMate Tow Bar Wiring # TM781124 and Trailer Wiring Harness #118416 be Used Together
  • The TrailerMate # TM781124 and the Tow Ready # 118416 can indeed be used together. However, if you are using a supplemental braking system in your Wrangler Unlimited, you will need to install diodes inline with the TrailerMate harness to prevent backfeeding into the RV wiring. In most cases, you will need two diodes like part # RM-690, one on the right turn/brake and one on the left turn/brake circuit, unless you are using a supplemental braking system that requires the RV running lights to b
    view full answer...

  • Will the TrailerMate Custom Tail Light Wiring Kit # TM781124 fit a 2013 Jeep Wrangler
  • Yes, the TrailerMate Custom Tail Light Wiring Kit # TM781124 will work on your 2013 Jeep Wrangler Sahara. Check out the installation video I attached that shows this product being installed on a 2013 Jeep Wrangler very similar to yours.
    view full answer...

  • Recommendation for Towing a 2012 Toyota Prius V
  • I do have a solution for your situation, however, at this time there are no custom fit wiring harnesses available for the 2012 Toyota Prius V or a substitute kit. After doing some research on your vehicle, I found that it is not recommended to flat tow the Prius V and a tow dolly must be used. This is most likely why a custom wiring harness is not available. To tow your Prius V, I recommend using the Roadmaster Tow Dolly, part # RM-2000-1. This dolly comes with tail lights, wheel nets and el
    view full answer...

Jeep Wrangler Accessories

Info for this part was:

Test Fit:
Joe V

Expert Research:
Michael L

Video Edited:
Zack K

Video by:
Andrew K

Written by:
Lindsey S

Expert Research:
Michael H

Expert Research:
Jameson C

Expert Research:
John H

Photos by:
Jim W

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