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Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.
Features:
Specs:
Installation
This custom-fit T-One 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 access cover and 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 and insert the provided fuse.
Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle. 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 ModuLite power module is built into this T-One connector. With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.
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Average Customer Rating: 4.9 out of 5 stars (153 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.Quality product.
Followed the provided video and aside from routing the power wire through the frame being a bit fiddly, the install was a snap.
If you have a few common tools and a little mechanical ability, install is a breeze.
Tim - 05/04/2022I contacted etrailer in advance of buying the items needed to add a trailer hitch to my 2021 Wrangler unlimited Sahara. I was assured everything would bolt right up and the wiring kit was made specifically for my new jeep. When I received my wiring kit, it was for a jeep with the battery on the opposite side of the vehicle. So the instructions were different and it was more of a chore routing the wires from the battery to the tail lights. Just barely had enough wire to reach the other side of the vehicle. I ended up having to hire a shop to facilitate the install and spent over $200 for the install due to the difference between the items, instructions, and my Jeep. I wouldn’t be so frustrated except I took the time to reach out to etrailer staff and I was assured there would no problems.
Jenny N - 03/21/2022
Very satisfied with the etrailer wiring harness for my 2019 Jeep Wrangler JLU. Installation instructions were good. Components and wiring are of good quality and sufficient length. Would buy again!
I installed this on my 2018 Wrangler and it was perfect. Very simple install. Videos were very helpful. Took about 3 hours by myself. It may have taken a little longer because I ran the battery wire inside the frame for protection. Seems to be very good quality and I would recommend this harness to anyone needing to add a trailer light plug to their vehicle. Thanks etrailer.
Installed on 2021 Jeep Wrangler Unlimited with Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" Item #C13392. It's been a year since I installed it, but I believe it did not require a dedicated power line, which makes the install easier.
I prefer to use this Tekonsha module for the vehicle that don`t have the factory tow harness. The module was tucked away in the body cavity behind the drivers side tail lamp assy. All wiring was covered in HD split loom. All wiring was concealed as much as possible by running them through the cross rail and frame rail up to the battery positive terminal. I did lengthen the green wire on the passenger side to accomplish this. All connections were done with heat shrink connectors. Installation did take longer than usual based on the wire routing I chose. Overall I am totally satisfied with this product.
Nice straight-forward installation videos helped to be sure I was getting everything right. Quality product that has worked great for over a year and counting. 2021 Jeep Wrangler Unlimited.
Easy to match the hitch I needed with my vehicle using the website. I was also able to pick out the wiring harness I needed as well. After being ordered it was shipped quickly with an email providing shipping and tracking information. Perfect fit to my vehicle. Very pleased with my purchase.
Kit worked great, had some trouble getting passenger side wiring pulled up in taillight housing due to small opening to access. I had to remove a lower splash guard panel in wheel well to get better access. I pulled power wire to battery thru passenger side frame, worked out great with electrical snake.
Nice easy install. Wish it had heat shrink for the connectors, or heat shrink connectors.
Kynndarrn - 04/29/2022I've purchased a handful of trailer hitches/wiring harnesses over the past 10 years and they have always been awesome!! Quality products and fast shipping every time!! Just recieved a new class 111 hitch & wiring harness for my 2018 Wrangler JL and installed the hitch in less then 10 minutes and the wiring was approximately an hour after watching the video provided on their website. Never been disappointed!!
This product was very easy to install connected perfectly to the factory connectors took some time to route the wires safely. Was the only kit I found for 2021 Jeep JL
Easy to install, great product. ETrailer never fails me.
Michael - 03/29/2022When I order from e-tailer I know I'm getting a quality product, and the right product. The wiring harness fit great. The thing I really love about e-tailer is the video's they have showing you just how to install the products.
As advertised, installation is not overly difficult. Simply watch the video, figure out your own way, then plug and play! Plenty of wire and length, had zero issue on the install, took less than an hour!
Straight forward and etrailer always has the resources to make installing simple and straight forward.
very easy install thanks to the outstanding video. Adding this and an $80 -2 inch receiver was way cheaper than buying from the dealer. Since I had the taillights off, i threw in a fuel filler door at the same time.
This harness worked as it should!
Fiverwheel - 12/28/2021this makes wiring ease they!! should make it for all of the towed vehicles!!
Nice installation kit. Absolutely everything you need but the tools.
Fast delivery, have not installed wiring harness yet but it looks very high quality and easy to install
I Received the kit very quickly and in good condition. Installation was easy and the kit came with everything needed to complete the install. The wiring, connectors and installation accessories were all high quality pieces.
I did add convoluted loom to all of the wiring that is exposed to the elements for good measure.
My Jeep is a 2018 Wrangler Unlimited JL Sport S with the standard halogen headlights and not the LED upgrade. I wired this T-One kit up in about 4 hours. I have pretty good mechanical knowledge and I'd say this kit is something that would be intimidating for someone who's never done it before. I ended up using a large part of the tools in my garage including a drill, various bits, a stick magnet (dropped the ground screw down into a cavity on the Jeep and couldn't find it), 1/4" ratchet, long extension, various sockets, flashlight, pliers, trim tool, wire crimp tool, lighter, T40 torx socket, extra zip ties, flat blade screw driver, etc. I used the grommet on the firewall behind the brake booster to run the power wire from the battery into the cabin of the Jeep. Tucked the power wire under the door sill trimwork all the way to the rear. Had to disassemble a large part of the trimwork at the rear of the Jeep to access the grommet that goes down into the driver side tail light. Then I was able to do my connections inside the cavity for the tail light, mount the converter box in there, and route the 4-pin and passenger side T-connector out the back of the cavity near the fuel filler tube. From there, across the top of the crossmember, and up into the passenger side tail light from the bottom. To do the install properly, it took a while and a good assortment of tools and a little knowledge of how plastic trim panels are attached so that you can remove them without breaking them. If you're not comfortable disassembling your new Jeep, order the factory tow package!! But if you want to save $650, order the hitch and wiring here at this site and do it yourself on a Saturday. Installation was a pain, but the kit included everything I needed (except the assortment of tools) and was well made. Trailer lights all work as expected. Hopefully the wiring will give me years of service.
Shawn - 04/29/2019Good quality. Fits and works as design ed.
Have purchased two of these and have had no problems with either. Good sound products.
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