Summer Starts Here - Save up to 70%
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
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 - no cutting, splicing or tapping required. 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 storage trays, the scuff panel, the interior side panel, 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 connector will be stowed in your rear cargo area.
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. Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of your trailer. This power module functions as a tail light converter to combine the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.
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.
California residents: click here
Average Customer Rating: 4.6 out of 5 stars (22 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 - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.The wiring harness snaps in with oem style connectors to the taillights, which I was impressed by. I wrapped my wiring in plastic conduit so it wouldn’t be exposed to the elements behind the bumper cover or chafe against any sharp or rough edges. The provided butt connectors have plastic sheathing which made creating a watertight seal difficult. I used regular metal connectors with quality heatshrink with glue on the inside for a perfect seal. The instructions say to run the wire to the battery underneath the car, but I would never do that on any vehicle I intend to own for a long time. Exposing a power wire to the elements and debris under the car is a bit how any engineer would prefer. Luckily, it is not exceedingly difficult to run it inside the car. I went through a grommet on the panel behind the rear driver side seat above the spare tire well, and then followed the washer hose all the way to the engine bay. Piercing the grommet on the upper left side of the firewall took a few tries to get the routing just right, but now all the wiring is protected in the car, will never be seen and will not cause an issues down the road. Perhaps easy to install, but not so simple to install in the safest, close to factory standards manner.
Picture is how I routed wiring from front left fender behind strut tower to battery terminal.
Easy to order from GREAT website SUPER SIMPLE to install got trailer hitch and wiring harness just unplug and plug in the new wiring harness no splicing THANK A BUNCH FOR MAKING IT SIMPLE
The website videos are incredibly helpful when installing this harness! Especially since they tailer it to the vehicle that I own! That takes time, money, and consideration for their customers. Everything I needed was in the kit. And when tested after I installed it, it worked perfectly. No issues!
Easy enough to install with simple to follow instructions. The connectors for the wires fell apart on use, but a simple enough fix with electrical tape. The kit was missing a few screws that the instructions said were needed, but I would definitely order again, easiest wiring harness install I’ve ever done.
Sierra K.
9/8/2021
Sorry about the trouble. Customer Service will be reaching out.
the trailer hitch fit great and wire fit easy
I purchased a hitch and everything I needed to install and use it from etrailer, and everything is working great! I had it professionally installed and they had everything they needed, including all for the lighting harness if I ever tow a small trailer. My car was a 2018 Subaru Impreza and being a newer car I was a little nervous that the hitch I got would work without, well, without a hitch. And it went on perfectly. Thank you etrailer! This was my second hitch purchase with all supplies and for a second time, I could not be happier with the pricing, the info on the website (which is AMAZING) and the quality of the products. Congratulations etrailer for another wonderful experience!
This lighting kit was relatively easy to install. I used an online video for the how to instructions. My 2017 Subaru Impreza hatchback was slightly different as I had to access the light plug by pulling the light fixture. Great product and Etrailer was extremely fast delivering the items I ordered. I highly recommend Etrailer.
Product arrived on time and in good condition.
Product is of high quality and the instructions were good but you better have some experience installing things like this or you could get in real trouble, a video would have been helpful.
These folks are fast and easy. And they provide plenty of assistance!
Giulio
7/20/2022
GREAT!!
Great product and and price.
Never received package
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Harold
7/27/2021
Everything is still working great no problems THANKS