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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.
Features:
Specs:
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.
Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.
Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.
California residents: click here
This is the second unit I installed. The first unit stopped sending the blink signal to the right/passenger side blinker. I searched online for troubleshooting tips and the only one was that the ground may be loose. I tested with my multimeter and no issue with the ground. While installing the replacement I found that the double stick tape had failed and the sending unit(?) black box had come lose. Now there is tape in the only place where the new unit could go. It is too difficult to remove so I taped the new unit in the same place. I appreciated the t-connectors over cutting and splicing. The installation video is a must and I would not have tried to install on my own without it. But I had difficulty passing the t-connector through the wall to the tail light. I rewatched the video and noticed the video was spiced at 10:48 which doesn't show how this issue was resolved. There is a speaker box in the way and more of the interior panels would need to be removed in order to remove the speaker so the t-connector could be passed through to the rear passenger light. Instead I cut the green wired, installed from the outside in and spliced the wire in the spare wheel well. After completion I tested the lights and everything is working. We'll see how long this one lasts.
It took about 3 hours to install. It would have been helpful knowing how to punch through the engine bay firewall grommet. I used a wire coat hanger by cutting the straight portion, using wd-40 on the wire coating and finally taping the hanger / wire together.
Otherwise, everything you need is in the box!!
Great job etrailer!
I initially installed the Mopar 82213938AF Trailer Tow Wiring Harness in the Jeep. Unfortunately, their wires are installed outside the cargo area and the wires melted onto the exhaust. Not only did this burn the fuse, it apparently fried the CPU rendering this very expensive system useless. I replaced it with this system which was much easier to install and is working well.
On day one I installed the Curt C13172 hitch in about an hour using a pair of Rino ramps. Day two I installed the C56208 T connector harness also in about an hour. Thanks to your videos it was trouble free.The most time consuming part was feeding and securing the main power lead from the back to the front. etrailer rocks!! Your website made it easy to research and select the right products for my 2014 Cherokee Latitude. I shopped your prices and may have been able to save a buck or two but the comfort of your knowledge and great how-to videos showed me you deserved my business.

Richg
10/1/2018
Nice of you guys to follow up. I was glad to write the review since I was well satisfied with the product and process. The hitch and harness have performed flawlessly. Your company will always be my first stop for anything tow related.
This was the perfect addition to my 2018 Cherokee!
The wiring was perfect and the instructions were easy to follow!
I’m an “advanced” DIY guy so I took it a step further. I had the factory hitch installed at Jeep as part of the purchase. (Wiring excluded) I coupled this 4 flat T- Connect with the Mopar multi tow and 4 flat wiring for a nice factory look. I also ran the power wire through the cab and firewall to ensure zero weathering. This did take some extra time. Otherwise, the entire install would have been about 90 mins!
Want an easy buy for a clean look ?
Buy this, the hitch and a mounting bracket!
Thanks etrailer!
Great product. I bought the 2014 Cherokee tow hitch and wiring harness. Received shipment in a reasonable amount of time and at a great price. In good condition and came with user friendly instuctions. Looks and works great! I would recommend this to other users.
Great product and very easy to install
I have a 2016 jeep Cherokee Trail hawk. I put the curt-hitch and T connector wiring harness for the trailer lights on in about four hours.took my time,very easy installation good product.
Exact fit. Super fast service. Will do business again. Thank You
This product works great. The install was really easy and the videos on etrailer.com were perfectly detailed as always. The plugs plug right in line with the tail lights. The trickiest part is making sure the controller box is positioned inside the cabin but I just slipped the wires through the vents in the bottom corners of the tire well. Customer service was extremely responsive and helpful so if you have any questions installing this or any other product, Just reach out to them.
althought the cord that runs to the battery was heck trying to install I have to say that was the only difficult part of the installation. we installed it along the side of the car under the plastic so basically inside the car and then through the driver door. it turned out great and all lights work.
Has been a year ans still works great.
After a year the right light (brake, turn ,and tail) on the car stopped working. I unplugged the trailer wiring harness and light works again. This is the second harness I've had to install the left side went out on the first one.I dont tow much with my Jeep but, I took a short trip puliing my motorcycle and it started then and the a couple of weeks later the light stopped working.
Great service and great products so far!
All went well. It took more time but was relatively easy. The instructions to pull down on the tabs but it should be push up so the plastic assembly would disengage form the bumper panel. Electricity went well but I have an engine light on which means I need to up grade my computer if it does not go off. Checked OBD codes and their were none.
Everything thing fit perfectly, easy in stallation
This was super easy and makes for a very clean looking installation!
Installed on my 2016 Cherokee Latitude. Followed the video and the installation went well. Instead of using the butt connectors I soldered and shrink wrapped my connections. If you have the 9 speaker with subwoofer, you have to remove the two screws from the subwoofer and pull it out toward the interior to get the T connector in the hole on the passenger side taillight. Wiring kit is great and high quality. Shipping was fast. Thanks etrailer for a solution for those without the factory wiring.

Brian M.
4/4/2018
They are doing fine and holding up well..satisfied. Thanks for checking.
Great product and easy installation. So glad I found them. Highly recommended their product.
Needed this product to supply ample current to my trailer lights since my tow vehicle uses LEDs instead of traditional light bulbs. Was easy to understand the instructions and install. Works great!

Chris
3/12/2018
The T-Connector works beautifully. Installed easily and quickly. Ive wired many vehicles for towing and this is the way to go!!
Everything arrived as listed. Great condition and makes the job so much easier.
Works as expected. Plenty of length to route the wires. I didn't have to tug to get them in place or contort in weird positions to get the car back together with the cables plugged in.
I cut the four wires to the trailer connector and routed them through a grommet in the wheel well so I could mount the connector outside. Still plenty of cable even after routing it that way. The instructions were clear and easy to follow.
My resent experience with etrailer will cause me to consider other options in the future.
I placed an online order for a trailer hitch. A couple hours later I realized I needed a wring kit, so I called to speak to a representative to see if it could be added to the previous order. I was assured that the two orders would be arriving together.
The delivery arrived a few days later, so I scheduled an installation with a professional installer. When we opened the box, we discovered there was no wiring kit. The hitch installation was scheduled and completed without the wiring.
Upon investigation I discovered the wiring kit was not added to the original order and did not ship for several days even though it was in stock. When I called to inquire, no explanation was given. The wiring kit arrived over a week later requiring a second installation appointment and additional cost.
I will definitely look for an alternative source in the future!
Couple problems: first, this does not feed all the way through the frame and out to the hitch. It’s meant to stay in the spare compartment and be dangles out the door when you need it. I decided I didn’t care, and I’ve been using it a year now with no issues. It’s high quality and weather hasn’t seemed to affect it. I’ve driven in rain, snow, and mud (Michigan conditions) with no issues. Only downside is the installation and having to “figure out” some solutions, like running the battery cable down the body from the driver side tail light, or grounding the unit inside the tail light compartment because there isn’t enough wire to ground inside the vehicle. All in all, works, lasts and solves the problem.
The video covered a 2015 Jeep Cherokee. My 2015 Jeep Cherokee came apart a bit differently than the one in the video. This is what I would call a intermediate install. If I were to do it over I would order the "2015 Jeep Cherokee T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector" by Tekonsha. This one installs on the inside of your vehicle and you must hang the plug and wire outside your back hatch to use. The Tekonsha wires on the outside of the vehicle and you don't have to open any doors to hang the plug out so you can hook up a trailer.
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Thank You!
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Victoria H.
1/24/2025
That does not sound fun Gary. I'm so glad this wiring harness fit your needs, and turned your experience around for you!