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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 in your rear cargo area, behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies and some interior paneling 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, 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 ModuLite power module is built into this T-One connector. Because your vehicle runs on a multiplex wiring system, the wiring needs to be converted to be 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.
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Average Customer Rating: 4.7 out of 5 stars (120 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.Very easy instillation, the video helped very much. I didn't have a lift so used ramps to lift the car, even though no lift I installed the wiring harness in 1 and a half hours. I"am impressed with the etrailer team and the quality of their products. I will be back for sure very happy customer here
Hookup was easy and straight forward. The 4 wire for the trailer is made to be mounted outside but I saw no mention of an additional bracket needed when I ordered the kit. I would have liked another 2 foot of wire to keep that corrosion sensitive inside the car, next to the spare tire.
Perfect fit. Just not give 5 stars as it’s quite “annoying” to instal:
1) removing the taillight is a PITA! Even removing two screws light did not get off! Broke after so much trying. The pressure pins that hold it are very strong and no much place to grab
2) Wiring the power from battery to the back is a hassle! And I’m an experienced mechanic! Took me about 45 minutes to find a way to route the wire (from inside the vehicle as from under will for sure not safe)
Mike L.
7/21/2018
Its perfectly acceptable to run the wire under the vehicle, as long as you avoid anything thats hot or moving, like exhaust, steering and suspension components. If necessary, wire loom like part # 7509-1 which is sold by the foot can be used to provide additional protection to the wire.
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Good price.
Fast shipping.
Perfect fit (2017 Kia Sportage LX)
Hitch installation (2 people/ vehicle lift) - less than 20 min.
Wiring harness (Tekonsha T-one) - time consuming but not difficult - 90 min.
Very pleased with this product.
Thanks much.
Easy installation without having to splice any wires or use a test probe and try to guess which wire is for what just unplug existing vehicle wires and plug in most of the time spent was disassembling the vehicle panels to get to the connectors the video is a huge help I watched it on my phone all along and paused at each step it was very helpful would not want to try without it I highly recommended
Great trailer hook up !
Every car i have bought a harness for has been a perfect fit and really easy to install following their videos.
It was perfect for my car and works gre at…
I received my order in 2 days which was awesome!! The sue provided everything I need including an installation video which was very well done!! Thank you!
Instructions easy to flow nice pictures showing how things look also video was great,just what the video mentioned running the power wire so-so just more timing consuming
Was easy to put in and the plug in wiring was a snap. Very happy with the purchase. Now I can bring my daughter to college with out having to bring 3 or 4 cars.
This company is easy to work with and the hitch came a day early.A1operation
Excellent product! Very easy to find natal and fit perfectly. Etrailer is the place to get all my part’s! This was my 4th harness and my 3rd hitch! NEVER an issue! Well Done!!
Love how the paperwork shows the actual vehicle the components are designed for!
I’ve purchased from etrailer before and will continue to do so!
This time they even included a circuit tester!
I recieved the products today. The help and customer service has been incredible so far! I will install the hitch and wiring harness this weekend. I will include an absolute honest review with pictures when I am finished !
I like the T- 1 Vehicle wiring harness Iplan to use it to pull my trailer , I like the way itplug,s in so I dont have to splice nothing
Leo S.
6/11/2018
it is working fine thank you so much.
I installed this hitch twice, first on a ne car that got totaled when a fellow drove into the side of it in a parking lot, The second hitch went on the same model replacement car.
Both times, the hitch, for a KIA Sportage, needed a delicate tap with a 12 pound sledge hammer to spread the mounting flanges before it would slide onto the frame. No big deal, otherwise the hitch is great, ordering was simple, and the customer service was excellent.
I ordered this for my SUV so I could hookup a trailer. Shipping was fast and I received in 4 days. I am not a mechanic by any means, with that being said, bought some car ramps and installed the hitch receiver (Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" - 76074). I also installed the wiring (T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118698). Took about 4.5 hours but overall look the look and feel. Everything went together great. I watch the video beforehand. I would highly recommend these products.
I ordered this for my SUV so I could hookup a trailer. Shipping was fast and I received in 4 days. I am not a mechanic by any means, with that being said, bought some car ramps and installed the hitch receiver (Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" - 76074). I also installed the wiring (T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118698). Took about 4.5 hours but overall look the look and feel. Everything went together great. I watch the video beforehand. I would highly recommend these products.
I like this product. I was able to install this wiring harness in about an hour. Only thing that took me a little bit of time was running the harness where the brake light is attached to the fender well. It was a booger running that line up, but not something I couldn't do. Took a few minutes to run the black power line from the rear of the car to the battery under the hood, but again, wasn't something overly difficult to do. Just time consuming I suppose. As for the harness itself, it's well made and the connectors snap in precisely. I recommend. Just follow the online video instructions. Easy enough.
Great kit. Instructions were clear and easy to follow. Installed myself in about hour. Never an issue. My trailer lights work every time. The only additional thing I do is apply a thin coat of diaelectric grease to the contacts to avoid water related corrosion. Absolutely no complaints with this kit. Works exactly as designed.
Would love to give this 5 stars but first this, the wiring, parts, directions, ease of installation, videos and everything was EXCELLENT. However, the length of wire for the trailer connector, from even the closest placement possible (I moved it twice, as close to the hitch as possible while staying inside the wheel well) is just long enough. NO SLACK AT ALL. Needs to be about 8-12 inches longer.
it one the very best items we have and if i would need another on ewe would buy from yall gain and thank you for all the info that yall help us with
Everything I ordered came on time. The video I watched was very helpful.
I use it often and have never had any difficulties. Easy install, but take your time.
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Jenny N.
2/21/2023
You are right in that adding on mounting bracket will be useful since the harness is stored outside the vehicle. I have one that I like recommend, part # C58001, which attaches to the hitch receiver to mount the plug next to it. That way it is right there whenever you need to use it. And it can be protected against corrosion by using dielectric grease part # LT37534. The harness also comes with a dust cap to cover the 4 way when not in use.