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Have you ever attempted to install a trailer connector and found yourself tangled up in a maze of wires and frustration? With the Curt T-Connector Vehicle Wiring Harness, those days are behind you. This custom-fit T-connector harness eliminates the need for cutting, splicing, or tapping. Simply locate the connection point behind your rear bumper and plug it in. That's it—installation complete in under five minutes, making it a breeze even for the least mechanically inclined.
Trailer connectors are notorious for falling victim to dust, grime, and corrosion, leading to poor performance. Thankfully, this connector comes with a practical dust cap to protect your 4-way flat trailer connector when it's not in use. So, your connections stay clean and reliable for the next time you need them.
Worried about compatibility with other trailer connectors? No worries—this harness is compatible with 5-pole, 6-pole, and 7-pole adapters (available separately), making your towing setup adaptable to a variety of trailers. This flexibility ensures you’re ready to connect whenever and whatever you decide to tow.
A trailer’s signal lights are crucial for safety—and reliability is paramount. This harness supports a maximum of 7.5 amps per circuit for both stop/turn lights and tail lights, ensuring your trailer’s signals are strong and visible, keeping you and others safe on the road.
Concerned about fitment? This wiring harness is specifically designed for vehicles with a factory tow package, ensuring that it’s tailored to your vehicle’s specifications for seamless integration. It’s a custom fit for various models, including the 2021 Buick Envision and 2020 GMC Acadia, meaning you get a precise fit every time.
Navigating rough terrains can put stress on your connections. This Curt T-Connector features a sturdy build to endure such situations, and it's recommended to use a small amount of grease on electrical connections to prevent corrosion, enhancing its longevity.
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Fit right on my Envision below the bumber looks great. and wire harness went on no problem.
The hitch has worked as expected. The big difference in products has always been more in the customer service, than the product quality itself. Your hitch is a perfect example. By providing all the necessary information, instructions, and specialty tools, you make this a top-notch product.
I was very pleasantly surprised by the ease of this wiring harness installation. I installed a wiring harness on a Jeep a few months ago. This was literally plug and play.
Chantry 
12/23/2024
I have had no issues with this harness. Every time I plug in a trailer it works just like Id expect.
I haven’t hooked it up yet but I now it’s going to fix. Thank you guys at E-Trailers.
This is exactly what I needed for towing with my Acadia. The printed instructions and video made it easy to install on my own.
For 2023 Buick Envision ST. Loosen bumper facia as described in video, but also loosen heat shield on left side. Then you can finally see the socket with factory plug, but can only get one hand up there. I unwrapped that cord from the other so it came down closer. Push screwdriver into slot below red slider to push it out and then again to get dummie plug out. Note, my Buick said nothing about factory trailering, but the plug was there.
packaging always seems to be slightly damaged from transport
have not had any damages yet, but with the wiring in the same package as the hitch, it will likely happen at some point.
Very nice pigtail! Easy install.
Lisa
2/28/2025
Excellent no issues and still working like new.
Jon G.
2/28/2025
Just as advertised. Plug and play.
This item was a perfect fit and worked great. But, when I had a new hitch installed, the installer put in all new wiring...sooo....good product while I needed it :p
The product worked for my 2021 chevorlet blazer to hook up to my pop up camper.
5 star on quality, 4 star on instructions. I’m pretty good with mechanical things. This was not difficult to install. The access holes provided were like 7/8” but bolt heads are 1-1/16” so needed to enlarge those holes using a 1/2” drill bit. Instructions said to disconnect muffler but I did not and was able to get it in place. Need to remove four screws, two on each side from center, on the bumper cover and pull back to install. Used jack stands to assist. Did not need to trim any of the cover. Fishing lines worked great too; just put a good kink in them to pass easy to the access hole. Did have to trim two bolts projecting from the bumper bracket and then it fit great, all bolts lined up. Adapter for lights was perfect also, bit hard to reach and disconnect cover though. Overall very happy with this product.
It was a direct fit on a 2025 Cadillac XT4.
Fit my 2017 xt5 works great.
Jim
4/30/2025
Good as the first day. Great quality
Though not shown in the picture, the wires are protected by a flexible tubing. No wire to chafe.
Installation was super easy. Instead of removing the torx screws to loosen the plastic bumper, I took out one bold that held the driver's side heat shield in and just moved that out of the way to get to the connector.
Curt Wiring harness worked perfectly on my GMC. Good value and e-trailer has the best videos to help with purchasing the right product and installation.
Great customer service! Had trouble with shipper but not etrailer!
Plug and play ease!
Fast delivery, good customer service. The installation video on the website could have shown a little more detail on how to remove the car's weather cap.
Very simple plug-n-play installation. Literally a 10-minute job. Push orange tab on car connector forward and depress tab hidden by that orange tab then pull out blanking plug from vehicle.
Easy install.
Direct fit for a 2021 Chevy Blazer premiere installed a hitch, and this wiring harness at the same time. I figured since the bumper was off, I would be able to install this quick and easy and it was. Just had to take the dust and weather cover off existing plug that was behind the driver side, bumper and plug this wiring harness right in. As you can see from pictures pretty straightforward install.
I received all the parts on time, I haven’t installed the items yet, but everything looks good so far, I hope everything is installed with no problems, the items that I ordered are suppose to fit my car, I have to wait and see.
Lauren was very helpfull with putting my hitch package together.Keep up the great work.Thank You
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Gwendolyn Y.
6/17/2025
I agree with you, Raymond, it looks great! What are you going to be towing?