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Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom wiring harness. T-One connector plugs into OEM tow package wiring harness - no cutting, splicing or tapping required.
Features:
Installation
This custom-fit T-One connector plugs into your vehicle's factory tow package wiring harness, which is located beneath the vehicle, near the frame rail on the passenger's side. Once you've plugged in the connectors, insert the included fuses and relays into their locations in the fusebox, which is located in the engine compartment.
Once installation is complete, the 7-way 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 7-pole connector itself - to help prevent corrosion.
California residents: click here
Average Customer Rating: 4.8 out of 5 stars (173 Customer Reviews)
Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom wiring harness. T-One connector plugs into OEM tow package wiring harness - no cutting, splicing or tapping required.Easy to plug in as advertised. Hardest part was having to remove the back bumper to route the wiring away from hot components. The eTrailer installation video was very helpful for the rest.
Product fit perfectly to the factory connector( it was a bit difficult to access it tho.) installed rather quickly with the exception of the bracket for the plug. Awesome part!
Made adding the hitch and wiring a snap to my 2017 Acadia Limited
Went on fairly simple. I wish it would’ve been able to mount to the hitch. This one didn’t but it works
I bought the trailer hitch and one of the connectors that were recommended and the connector bracket does not fit so I need a different connector. Also the angle on this hitch doesnt seem right. I bolt the 4 m12 bolts in and then the theres a gap of 1/2 inch where the 1/4 inch spacers are supposed to go.
Wiring harness was easy to install. The existing plug on the car is held up in the wheel well with a clip. Unhooking it helps to access and snap the two plugs together. I was able to re-hook the end which helps keep the harness supported at that point. Note - you should use a dialectic gel on both plug and receptacle ends. This helps to waterproof and avoid corrosion at the connection. Follow directions to avoid contact with the tail pipe and strap accordingly.
Adding in the fuses in the fuse block was easy, The only issue I had was installing the two relays. Most relays require installs in a certain direction to be certain the coil and contacts are not reversed. I did not see any indicator to tell me which direction they must be installed. The red circled relays in the photo are the ones I'm talking about. It took me about a half hour to complete the project. That time also included installing the 4/7 pin adapter receptacle that this harness plugs in to at the hitch.
Like many others stated, super easy installation of the hitch. Only took me about 30 min by myself. It took me about an hour for the wiring harness and bracket since I had to find another bolt and nut since it only came with 3. The thing that gave me the most trouble was the wiring harness. I couldn't bring the cannon plug down towards me at all so I had to do it all by feel. The mounting bracket for the wiring harness I chose to flip upside down and bend towards the rear of the car and down so I could hide the wiring and hitch completely. The other reason was because I didn't want the bracket to catch on anything because it was lower than the bumper. I ordered the supplies on Fri and they were here mid day the following Tuesday. With all the great videos, a job that might have taken me 4-5 hours only took 2 hours plus knowing where the cannon plug was helped tremendously. If I hadn't known where it was I would have prob had to do a splice job. This job, in my opinion, looks professional. Thanks ETRAILER.
This kit was very easy to install. Plug and play.
Product fit exactly as described. I want to be able to tow a small camping trailer. I have family visiting from Washington State. I needed a 2nd tow vehicle ETRAILER had all the parts I needed to prepare my buick for towing.
Perfect fit and length. Only issue was it does not come with a bracket to mount the plug to the hitch. I guess it has to dangle or I wire tie it up, until I get one now.
Package delivered a day early!!
Quality parts as always!
Arrived fast and installed easily, plug and play!
Fit and works perfect
the hardest part was getting a good grip on the truck side of the plug, not a lot of room.
Excellent product and service from a trustworthy company. I have purchased from etrailer in the past and was not disappointed in quality and workmanship. This recent purchase was also very satisfying in the fact that with etrailers excellent customer service reps the purchase I made was the exact part I needed. When I ran into a slight problem on Saturday, just one phone call resolved the issue. I take great pride in being able to complete a project by myself other than relying on a dealership who would charge me double for the same thing. I would highly recommend etrailer to anyone looking for trailer parts and hitches. Fast curtious service and knowledgeable reps make etrailer number one place to purchase.
Gary Y.
6/4/2020
Great works as described.
Beyond pleased with this company. The videos they made helped so much. I would reorder if I had to do it all over again. Thank you.
I installed the trailer hitch and wiring harness yesterday without any problems. The great videos helped a lot. Products and service are outstanding.
Mike C.
6/15/2017
Excellent
I hooked it up yesterday but have not tested it. Will try it out soon.
The trailer hitch has been fine but I have had intermittent problems with the trailer wiring for a year now ( I only use the trailer a few times each year). The left blinker on the trailer intermittently quits working. When this happens, the tail lights on the left side are brighter than the right so I believe the blinker lights are shorted to the tail lights but not connected to the vehicle blinker signal. I am able to wiggle the wires near where the cable connects to the vehicle connecter and the blinker begins working and the tail lights are the proper brightness. I can't disconnect the cable from the vehicle wiring without putting the car on a lift so I have not been able to determine whether it's a problem with the vehicle wiring or the trailer light cable without taking the vehicle to a shop which I have avoided so far. The trailer wiring is fine and works with other vehicles so I know its not the trailer. The cable is properly routed around any hot exhaust pipes so it appears to be installed correctly. I plan to take it in soon as I am tired of fiddling with it to get it to work.
Easy installation on my 2015 Buick Enclave as long as you have small enough arms to reach up under the side. One downside was there wasn't a mounting bracket included, so the wiring is hanging while I search to get one. Also, the zip ties included were not long enough to attach anywhere affectively, so I had to use some I purchased another time.
Mike L.
4/24/2018
We can help you with a mounting option for your trailer connector! If your trailer hitch already has a bracket on it, you can simply use part # PK12711U. If the hitch doesnt have a bracket, youll need the PK12711U and a no-drill bracket, 18136. Drilling directly into the hitch is not recommended as it can weaken the hitch.
Be careful what you order. I ordered the 4 pin but really should have ordered this 7 pin. My bad, I get it. etrailer determines the return shipping cost. The 7 pin installed no problem.
Andy
5/22/2018
Great but it would be nice to have included stainless steel hardware
I received excellent customer service from etrailer! They were able to guarantee arrival of the part days ahead of my local parts supply store. (The local parts supply store also tried to sell me a part that would not fit my vehicle.) The customer service representative at etrailer was very helpful, courteous, knowledgeable, and well spoken.
The Part itself, a wiring harness to add a trailer plug on our vehicle, appears to be high quality, and fit my application perfectly. I was able to simply plug the wiring harness into the existing factory plug at the rear of our vehicle.
Two things would have made the wiring harness, a Tekonsha product, better. The wiring harness did not come with any di-electric grease, which should be provided for any exterior electrical connection. I had to supply my own di-electric grease for the project. And while the part did come with four supplied zip-ties, they were too short to properly attach the wiring harness to much of anything underneath our vehicle. I had to supply my own, longer and stronger zip ties for the project.
All in all, a great product, and backed by excellent customer service from etrailer.com.
This wiring kit was a perfect fit. Everything needed to make my vehicle ready to tow on the wiring side was included, It even had a few fuses left for spare. The instructions were exact and simple. The install time was very quick and painless. I zip tied my 7 way end to the driver side underneath of rear bumper between hitch and bumper. I have a 2015 GMC Acadia with a Curt #13424 Class III hitch to tow a light weight utility trailer.
I installed the 7 Pin wiring harness and connector. Everything was straight forward and simple. I installed all the fuses and relays provided as instructions. Everything worked except the Backup portion. The kit included relays for Left turn/Stop and Right turn/Stop but no relay for the trailer Back/up. In the instructions, the picture provided, it does show a relay in the Trailer Back/Up socket.
I took one of the turn/Stop relays and put it into the Trailer Bk/Up position and I had power on the Backup Pin on the connector. The kit came with 2 relays but it should come with 3 relays.
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Jesse
9/2/2023
Still works great after a year. No issues.