T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
This item does not fit your vehicle
1992 Toyota Pickup
These items fit your vehicle
1992 Toyota Pickup
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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.
Installing a 7-way trailer connector on your vehicle is a breeze with the custom T-One wiring harness. This streamlined solution plugs directly into your vehicle's OEM tow package, eliminating the need for cutting, splicing, or tapping into your vehicle's wiring system. It’s a straightforward setup that ensures a reliable and secure connection, getting you ready to tow no matter the destination.
When you hit the road, rely on the sturdy 16-gauge bonded wires powering your trailer’s signal lights. Designed for factory tow packages, this harness ensures robust power flow, supporting adapters ranging from 4-pole to 6-pole, sold separately. With installation complete, enjoy peace of mind knowing your trailer's lights will perform consistently while you're on the move.
The life of your towing equipment is extended with a simple yet essential touch of grease on all electrical connections. By applying a small amount on both your vehicle’s plugs and the 7-pole connector itself, you protect your system from corrosion, ensuring longevity of your towing setup. This protective measure is especially valuable in varying weather conditions and long hauls.
Find your vehicle's factory tow package wiring harness effortlessly. Situated beneath the vehicle near the frame rail on the passenger side, connecting is straightforward. After installation, the connector is securely stowed near the trailer hitch, with a mounting bracket (sold separately) recommended for added stability. It's designed for a snug fit, keeping everything neatly organized.
Say goodbye to last-minute store runs for missing parts. This kit includes all necessary relays and fuses for a complete installation, saving you time and effort. Just insert these components into their designated locations in the fuse box, located in the engine compartment, and you're ready to hit the road with confidence.
The 7-way blade-style connector is robust enough for adventure seekers with a variety of trailers. It handles diverse towing needs, whether it's transporting a compact camping trailer or embarking on bigger hauls. With universal compatibility designed into its core, you can trust this setup to deliver a smooth experience, no matter your trailer type.
California residents: click here
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.
Seems fine so far (haven't installed yet).
I know this is my fault for not paying attention but of alllllll the kits on this store....you'd think this would come with a mounting bracket but it doesn't. Wtf man.
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.
Made adding the hitch and wiring a snap to my 2017 Acadia Limited
Perfect. Exactly what I needed
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.
Went on fairly simple. I wish it would’ve been able to mount to the hitch. This one didn’t but it works
Great customer service. Product was misdirected and the staff kept me informed all the way to delivery. Great job.
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.
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
Installation was really simple. Product is durable and should last the life of the vehicle no problems. I've had the wiring harness installed for a year and the new mexico sun hasn't faded the plastic covers at all. Still looks brand new
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
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.
Jesse
9/2/2023
Still works great after a year. No issues.
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.
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.
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.
I sure would like to rate this wiring harness 5 stars but I had one concern about the order the colors were after installing which the hardest part was to reach the plug behind the rear tire I checked out the positions of the pins they checked out also receiving the fuses and the relays to finish the job was great I do wish the trailer brake backup light relay came with it but not many trailers have backup lights wiring was also delivered in a timely manner when I did have concern about the order they were very helpful with e-mails back and forth to me thank you
Made wiring super simple on our '17 Traverse. I only wish the hitch had a better place to mount the connector.
2017 Chevy Traverse
Super easy installation. I was able to install it myself. There were a few issues I had to overcome however:
1. Getting the plug into the wire harness underneath the vehicle took quite a bit of time as it is very hard to get to. I ended up having my wife help me by pulling the plastic body piece out so I could get my arm in to reach it better.
2. The YouTube video is very helpful for the most part however, There is a discrepancy between the directions that came with the wiring harness and the fuses/relays that were included. Follow the instructions that come with the harness and it will be alright. Do not rely on the video for this portion of the install.
3. The plug connector that attaches to the hitch itself needs a mounting bracket that IS NOT included with the hitch. The bracket is easily found at an automotive parts store but take the connector with you to make sure it fits properly onto the bracket.
Other than these minor (and somewhat confusing) issues this tow package was easy to install and it is VERY well built.
The only thing keeping this item from a five star review is that they didn’t provide a better mounting location for the wires near the exhaust system. Some location clips (what I ended up finding) would have completed the kit. Other then that, it was plug and play.
Due to purchase of a trailer with a different plug and electric brakes, replaced a previously installed 4 pole wiring harness. Fuses and relays were already installed in the fuse box. For a simple, clean and functional wiring harness installation on our 2015 Chevy Traverse this kit can't be beat. Videos provided by etrailer.com are very helpful.
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer 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.
Michael
11/7/2024
After a year, every time I need to use this harness, it is waiting and ready. Works every time.