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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 - no cutting, splicing or tapping required.
Features:
Specs:
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located in your rear cargo area, either behind the driver's-side trim panel or in the spare tire compartment. You will need to remove some interior paneling to access this harness. Once you've plugged in the connector, insert the provided fuse into the in-line fuse holder.
Once installation is complete, the 4-way flat 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 plug 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.
California residents: click here
Average Customer Rating: 4.8 out of 5 stars (2763 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.Excellent product as usual from etrailer. This is probably the third wiring adapter I’ve brought from etrailer & they’re always plug & play. The only thing that varies is where the connector is located in the vehicle. Luckily Subaru places them in an easy to reach location. Out new 2022 Outback was the easiest yet. The instructions say to “Store the 4-Flat connector in the spare tire compartment when not in use”. I don’t like the idea of it being closed in the tailgate when in use so I run it through an oval I cut in the spare tire well using a grommet and silicone sealant to ensure it says water tight. The extra wiring is secured to the back side of the bumper and just enough lead hanging out to connect to my utility trailer.
Quality; well-made component that was as easy as plug in, secure some wires (out of harm’s way) plug into trailer wiring and turn the lights on. Instructions and function could not have been easier. This has always been my experience with e-trailer products!
Henry
6/27/2024
1 year of use later, getting crushed, battered around and the wiring harness keeps doing what it was intended to do- flawlessly.
The product was boxed well and was the easiest thing to install! I purchased the wiring harness along with the trailer hitch. The trailer hitch was a little cumbersome but I was able to do the whole thing by myself. This is the second hitch/harness I have purchased from etrailer and I have had great success with both!
Gregory
5/7/2024
After a year and pulling many loads, both heavy and light, this set-up is still top notch. Everything is working great. I don’t believe there’s a simpler way to go about installing your own wiring harness.
The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector was awesome. It literally took me about 2 minutes to install it on my 2024 Subaru Outback. We popped the tailgate trim piece off and the factory connection was right there to make the connection. It works great.
I bought this harness for a 2020 Subaru Outback and couldn't be happier. It made for a very tidy installation and does exactly what it is supposed to do.
Roy
8/1/2024
After a year of use, there has been zero problems. Very pleased.
The T-One wiring harness connected directly to the factory wiring on my 2018 Subaru Forester. The whole install was done in less than 10 minutes, with most of the effort going toward removing and replacing the interior panels needed to access the wiring.
I will be towing infrequently, and like that the harness can be safely stored inside the vehicle, and appreciate the “plug and play” fit without modification to the factory wiring. The etrailer how to video was spot on and provided a great preview of the install process.
Trailer hitch arrived promptly and the box was intact and included the plug and play trailer wiring kit that I ordered for our 2024 Subaru Outback Wilderness.
Super easy install. Clear instructions, plug and play! The hitch was also an easy install. Collect the needed tools and supplies and I got it installed in about an hour without a car lift or jacking. Very sturdy unit and not awful to look at!
It was a super easy install. The instructions said the connector on a 2022 Crosstrek was under the left side panels. Nope, it was under the center trim near the lock latch. Two minutes after I found it I was done. Super easy.
Hitch came in great shape! Got the car apart the fist time and the hardware was wrong??. I called customer service and they shipped me the right one very quickly. Hitch went on easily with minor issues. The trailer harness was literally a plug in job works perfect. On the Subaru wilderness I was able to use a straight hitch. Over all very pleased.
I wish that all of the companies that I deal with were as easy to work with! The staff is exceptional,making purchases a simple transaction. The install video was spot on made using my year and model of vechicle. The car to trailer wiring that I purchased is very well made and works perfectly. Thank you Etrailer.com for a simple transaction, I will be shopping with you again.
Very nice quality hitch and wiring harness. 24 Subaru Crosstrek. Easy half hour install on the hitch and 10 minute plug and play on the trailer harness. Very helpful folks at etrailer and super fast shipping
On my 2022 outback there was no need to remove the plastic cover on the car. Just reach out and plug the trailer connector.
With the help of videos installation was a quick and easy and problem free.
Very good product! I do wish it had inline plug-in attached to hitch rather than tucking into spare tire compartment.
Great Price. Works well on my 2017 Subaru Forester. I’ve hauled a lot of things with it now! Ex: Trailer with mower, motorcycle, beds, couches etc. Even pulled a 14ft trailer. I have had zero issues. Definitely recommend!
Easy to install. The harness has been working flawlessly.
Very easy install. Quality wiring harne ss.
2021 Crosstrek Premium, Manual.
As simple as can be. Plug and play. worked perfectly. In and out in under 5 minutes.
The installation was quick and easy thanks to the online video and it tested ok.
James
5/7/2024
The wiring harness has been working perfectly
Installing this was SO EASY. I am not an electrician or a mechanic and have never modified any car before, but watching the installation video on the website was super helpful and I pretty much couldn't have done it without the video! I installed this in 30 minutes. I bet a person could do it even faster than that if they were more experienced than I am!
Looks good; not installed yet, which will be easy with the quick connector mated to the one provided in the vehicle.
Rw
3/30/2024
It works fine in our 2019 Outback. It takes patience to fish out the vehicles installed connector if you dont want to remove the interior panel, risking damage to clips, fasteners, etc. But once done, its out of sight, out of mind, and most importantly, out of the way!
Installed hitch and wiring all went as expected a smooth easy install, everything works as advertised , the you tube video made the installation easy and the instructions were clear and understandable. We enjoy E-Trailer , will be ordering again soon . Thanks David
Product and instructions were good. Nice to be able to pull my trailer more or less legally now.
This is the 2nd time I've bought a wiring kit from etrailer that was "Plug & Play". The stock Subaru trailer connector was right where they showed to be in the video & was easy to get to.
I don't care for the idea of running it over the tailgate & body seal so I chose to run it through a conveniently placed rubbed plug in the spare tire well. The tire is held up off the harness by the hard insulation in the tire well bottom. A little silicone sealant around the harness where I snipped the plug to keep the water out & we're done!
Dennis
4/8/2015
It looks like you didnt put the converter box under the wheel well cover like the installation instructions suggest. Did you cut out some foam from the compartment tray to fit around it on the floor? Thanks, I like the idea of going the through the plug in the floor and putting the wire directly outside.
Chris B.
5/7/2015
Hi Dennis,Yes, I simply cut out a little bit of the foam panel. I wanted to keep the convertor box easily accessible. On the off chance it were to fail in the future it would keep it easy to test
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Chris
5/30/2023
It’s been a year now and it still works like a charm with NO issues