To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Say goodbye to the hassle of splicing and cutting wires with the T-One Vehicle Wiring Harness. Designed for effortless installation, this custom-fit harness plugs directly into your vehicle's existing wiring system. Enjoy the ease of plug and play as you connect your trailer's signal lights in minutes, leaving more time for what really matters—your journey.
Keep your connectors protected from the elements with the sturdy 16-gauge bonded wire and accompanying dust cap. Designed to withstand various weather conditions, this system ensures your electrical connections remain pristine. Whether you're driving through rain or snow, rest assured your trailer lights will remain reliable.
With the ability to accommodate 5-pole, 6-pole, and 7-pole adapters (sold separately), this wiring harness offers flexibility for your towing needs. Whether you’re using different trailers or planning to upgrade, this feature provides peace of mind with its versatile design.
For long-term reliability, apply a small amount of grease to all electrical connections to ward off corrosion. Additionally, consider using a separately sold mounting bracket to keep the connector secure and stable, ensuring your setup withstands vibrations and potential disconnections during travels.
The precision-engineered connection points of this harness align seamlessly with your vehicle's existing wiring along the driver-side frame rail. Specifically constructed to connect directly into the standard 12-pin plug behind the passenger kick panel, this ensures proper functionality and a perfect electrical fit every time.
Secure the power your trailer needs with a maximum amperage of 7.5 amps per circuit. Whether you’re towing during daylight or nighttime, enjoy a consistent and reliable source of power to keep your trailer lights visible and safe.
No specific notes found in the provided information.
California residents: click here
Good quality product.. Easy install!
Very easy installation, perfect :)
Worked as stated
Installs as easy as advertised.
Easy installation. Product looks great.
no problems,fast shipping
Perfect fit, fast, easy install in about 10 minutes. Works great.
Product was as described and shipped very fast.
this product is great! it only took about 10 minutes to install and it works perfectly!
Product was perfect. Installation was super easy, the video helped make it a breeze.
Very quick delivery and instalation was way easier than I was expecting it to be!
EASY, Yet well built. No problems making everything fit. I'll never go to U-Haul again.
Fast delivery and a good instructional video made the install a snap!
Wicked fast shipment with delivery notification. And the prices are great too. Product support/videos top notch.
Works just as they said it would. Installed in no time at all
Worked as advertised. Very easy to install.
Very simple installation, it looks complicated in the picture but literally takes about 10 minutes to install.
I installed the relays,the 4 pin plug in about 20 minutes. Worked great! Went to OuterBanks fishing with boat in tow! Thanks.
It work how it was supos to work, great prices, answer questions like professionals, I will reconmend this web side to any body.
everything came fast. Instructions do not help much but if your somewhat mechanicaly inclined then install shouldnt be to hard.
The wiring kit got here right when they said it would, in the same box with the hitch. It installed quickly, and everything fit perfectly. I will never go anywhere else for trailer/towing equipment.
Easy installation. 45 minutes, no problems. I didn't know I needed this until I tried to get my trailer lights to work. Thanks Etrailer. The information was easy to find and the service was great!
The most trouble i had was getting the cover of the plug Nissan installed, which wasn't much. After that it is just a matter of plugging it in and strapping it in place. I am 72 years old and had it on in about 20 minutes.
Great products, easy to install, easy to follow instructions!
I just received this product and it worked great! The install video was excellent and made the process painless!
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.




































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.