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Gone are the days of cutting and splicing wires! The T-One Wiring Harness is specifically engineered for vehicles with an OEM tow package configuration. Simply plug it into the factory tow package wiring harness in the rear cargo area without any tools or technical expertise. It's an easy 5-minute job, designed to make trailer wiring a breeze.
If you’re concerned about durability and want long-term reliability, this harness features 16-gauge bonded wires that offer a solid connection. It’s perfect for ensuring that your trailer lights never fail during long trips and stand up to the elements, providing a more secure connection as you tow.
Whether you're using a 5-pole, 6-pole, or even a 7-pole adapter, this harness is up for the task. Its 4-pole flat trailer connector offers flexible compatibility, letting you adapt easily to different types of trailers and making it an excellent choice for any towing enthusiast.
Keep your electrical connections in pristine condition for longer! Applying a small amount of grease to the connectors prevents corrosion and guarantees smooth functioning over time. This proactive step can save you from future hassles caused by wear and tear and environmental exposure.
Designed exclusively to fit your vehicle’s specific make and model, this wiring harness ensures an impeccable fit that requires no drilling or alteration of your vehicle's existing structure. It blends seamlessly with your car's aesthetics and functionality, maintaining a clean look that doesn’t compromise on utility.
Secure your dedicated trailer connections with the recommended mounting bracket (sold separately). Maintaining a sturdy hold helps in keeping the connections secure, preventing accidental disconnections even over rugged terrain. This is a must-have addition for frequent travelers or those who often drive on bumpy roads.
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Average Customer Rating: 4.9 out of 5 stars (271 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 OEM tow package harness - no cutting, splicing or tapping required.Great service. I installed the trailer hitch and wiring in 45 minutes. It was a simple install. I'm in my 70's that shows anyone can do it
I could not be more pleased with this purchase experience.sheila answered my questions and made some recommendations which I took. Later she even emailed me to tell me that the order had been shipped. My order arrived on time as promised, Although the box was pretty well beat up. Thankfully, there was no damage to the contents. The u p s guy took responsibility for the damaged package.
Victoria H.
3/6/2025
I'm so glad to hear Shelia was so helpful throughout your experience, Dane! I'm also happy none of your order was damaged even though the box didn't quite make the trip. I will let Shelia know you reached out!
Very nice quality. Installation was a snap. Video very helpful. I chose to use a step bit to enlarge the hole. Took two seconds. This is my second hitch from George. Great prices, excellent shipping time. I chose to cut the bumper cover to reinstall. Looks more trimmed out and intentional.
Easy ordering and quick delivery always.
Great product, easy installation, outstanding support from everyone I worked with.
Took me about an hour and the help of my son and son in law to get it done, but it saved me $800 from the dealer’s quote. 2 people could have done it, but 2 to hold the hitch up until I got the bolts started really made it easy. The wiring adapter took less than 5minutes and has worked perfectly.
I will use etrailer again.
The Curt hitch cost a bit more than the Draw Tite, but I am drawn to "made in USA", which Curt bragged about, and Draw Tite doesn't mention..(ie made in China).
If you look at the pictures of both hitches, you can see that the Curt hitch has a considerably larger cross member, which, I feel, can account for at least 1/2 the difference in cost.
I was sold on etrailer because of their excellent video on you tube. The installation went without a 'hitch' (ouch!). The video was very accurate and explains everything extremely well. The only difference for me was that I did not have to enlarge the 'fishing' holes; mine is a 2018 XT5, and the holes were plenty large for the bolts and doublers. I also installed the Tekonsha 118720 wiring harness, which amounts to simply 'unplugging a dust cap, then plugging in the harness' - there is absolutely no reason for this to take more than 2 minutes....(it took me 5).
As many have noted, the hitch is pretty heavy (I'm guessing 40 to 50 lbs). The weight is not such a problem, except that it is also pretty awkward. What worked very well for me was to not raise the car at all. Where the cross tube, and the receiver tube meet (middle of the hitch) is braced with a large, flat plate (safety chain eyelets) this wide plate is ideal to set on a floor jack, and the hitch balances very well. My wife 'manned' the jack, and I rolled around on a creeper guiding the hitch into place. The 'fishing' wires are long enough that they can be passed through the hitch's bolt holes while the jack is still low. Keeping the wires tight as the jack is raised guides the hitch right into position. I had to 'wiggle' the hitch a little as it passed in between the muffler and the bumper cover, then I was home free!
I didn't really time the procedure, but I would estimate about an hour, start to finish. Not bad for a "mid 60's, fat, out of shape, fella" & his 60(ish) wife!
My trailer lights use the round, 6 pin connector, so I made a bracket that bolts to the cross tube, and holds the 6 pin receptacle. I then cut the 4 pin fitting off the wiring harness, and connected the wires to the receptacle.
Also, I didn't care for the idea of having to keep up with a 7mm nut driver, so I decided to install "Southco 1/4 turn wing fasteners".
Those last two projects took almost a whole day (including nap time!)
I attached pictures of the finished project. Probably doesn't show much..I didn't take pictures as I went.....& I'm not going back!
Fastest ever!
I am so excited and amazed at this product. The dealership wanted to charge me $462.34 to order it, and $429.00 to install it. $891.39, and that doesn't include tax and fees. I must say YouTube is my very best friend as I install the hitch and harness in less than an hour on my 2017 Acadia, and saved [About $750]. I will order all my needed items from Etrailer. The order can within four days. Thank you and if I could give 10 stars I would. CET Thomas, Aka Batman, Byron, GA
easy easy, that's all i can say, video instructions were perfect, and it was a piece of cake to install!
Thanks so much!
I put a new receiver on my wife's 2020 Cadillac AT5 primarily for a bike rack but I thought I should do the wiring harness also. it was simple to install and it worked without a problem. Glad I made the choice to add the harness with the receiver.
The hitch and wiring plug fit perfect was easy to install, very pleased with the product,
Don’t buy your after market parts anywhere else. Everything that we buy from e trailer is as advertised and works great.
Anthony
8/14/2023
It still works and we use it often. After a year I still stand behind my review.
It's the perfect answer to my problem. I put it on immediately, it was so easy and it worked great ??
Product arrived in three days. Perfect fit for my vehicle. Simple, plug-in installation, nor fishing of, or splicing of wires. I have used this company in the past with the same great products and services.
Robert B.
11/2/2020
One year out and the product still performs. Easy to install! I was able to reach right in and complete the plug-in, without removing any body panels.
Easy to install once you get to that st ep
This 4 pin connector was an exact fit for my 19 xt5. There are two plugs under the bumper that look similar. Once you remove the cap to the plug that this plugs into on your cars harness which isn't hard you plug in this 4pin into it. The length is great as well. It's literally plug and play. The 4 pin has a rubber boot that hooks onto the saftey chain anchor on your hitch and covers the 4pins when closed, this is probably the best feature. No more dragging it down the road accidentally.
Instead of buying a new truck we bought a new SUV and purchased a receiver trailer hitch/Hiring for the SUV and a trailer to use instead of a truck, to pull the trailer that’s The best thing we ever did when we brought this product from etrailer.com A great product, cost-effective, easy instructions to follow and easy installation. A very well engineered product, I was designed exactly for Our new XT5 SUV . Easy to follow instructions I was actually easy to install. Highly recommend etrailer.com and I will use it again when my other new car arrives. A great company with cost-effective and great value automobile parts.. Keep up the good work and by the way great customer service [Thumbs up]
Everything arrived in a timely manner and well packed. The install videos made installation easy. Only took an hour or so. The wiring harness for the trailer lights was correct which made that super easy. Towed my boat the next day. I would definitely recommend Etrailer.com
The wiring harness I purchased for my 2018 GMC Acadia worked great. Was easy and quick to install. Saved me from having to wire in trailer power myself. Very straight forward. Just plug in and pull wiring to the hitch.
Installing this kit was no small feat. It required disassembly of the rear bumper and taillight assemblies, as well as snaking the wiring - intelligently - all the way from the back to the front. However, once installed it's been performing admirably for over a year and 10k miles of towing.
High quality product at a great price! Came in only 3 days and free shipping as I also purchased a hitch. I would buy again from these guys, fantastic service!
Hal
1/21/2022
Installation for both the wiring harness and the hitch was very easy and the instructions for both were spot on. I couldnt be happier!
I installed the hitch on my XT5 today by myself (I am 85 yrs. old) but an extra pair of hands would have been helpful. It takes a little ingenuity to install it alone. I used a motorcycle jack to aid me in the installation. Removing the additional bumper cover screw to the left of the access door gives the wiring harness plate on the hitch more clearance during the install. Pull wires worked great to get hardware in place. Hitch is very sturdy. I will be using it mainly for a bicycle carrier for my E-bike.
The hitch and wiring harness were a breeze to install using the videos. They have served well for the many times I have used my bike rack on my 2018 GMC Acadia.
I haven't used the trailer electrical interface yet but the install went perfectly. No problems.
Bought this in conjunction with my hitch and am more than satisfied with the vendor who sold the items to me.
My shipment came in on time and everything that I ordered was shipped correctly. All items were in great condition and not damaged. I am very happy with my order with etrailers. I will not hesitate to let anyone know where to purchase trailing equipment at a great price. Thank you so much for you help. I will install the hitch and all accessories next week and I will take pictures of the final install.
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Edward
7/14/2024
It works great, no problems. The cover goes over the hitch easily when not in use