Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2009 Chevrolet Avalanche
These items fit your vehicle
2009 Chevrolet Avalanche
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Wiring up a trailer can be a headache if you have to splice into factory wiring. The Curt T-Connector makes it simple with a true plug-in setup that connects directly behind the tail lights. It’s nearly a complete plug-and-play install—no wire cutting needed. Just plug the two pigtails in place, ground the white wire, and you’re ready to go.
Instead of drawing power from your vehicle’s light circuits, this harness uses a powered converter that runs its own 12-volt line to the battery. That design keeps the vehicle wiring protected from overload and helps the trailer lights run bright and consistent. The black power wire routes along the brake lines to the engine bay for a secure and tidy setup.
The 4-flat connector gives you exactly what most trailers need—running lights, turn signals, and brake lights—all in one weather-resistant plug. It’s built for reliability so you can hook up quickly and hit the road with confidence.
If your vehicle didn’t come ready to tow, this harness fills in what’s missing. The included powered converter and vehicle-end connectors work together to give you a full lighting setup without relying on factory tow wiring. It’s a straightforward way to get trailer lights working right the first time.
Customer Satisfaction Score:
84% were satisfied with this product
16% of customers were not satisfied
Ratings & Reviews
The complete process from ordering to installing was a breeze.
Easy to install. Works great!
perfect fit easy installation
Wire harness is still functional with no issues after a year.
Loved both products I purchased. Light kit and Curt trailer hitch for my 2018 Sonata. Both were extremely easy to install and built with quality materials. I will definitely purchase from etrailer again and I will also recommend to friends. Thank you!
I am very satisfied with this item. I had it professionally installed. It's the second wiring harness I've purchased from you; the first was for my other vehicle. I would buy from you again!
Thanks to Bill E who looked into why I received a wrong type of wire harness (Hopkins instead of Curt) two times and corrected it to the right order, I will make it to my home in Florida from Iowa in the nick of time. I received all that I needed, including an adapter converting the wiring to trailer. Went from bad to "All is good"
Mark
This wiring kit ade the install extremely easy and is holding up very well. The trailer sits outside, uncovered year long and the wiring and lights still look almost new.
Cannot imagine adding trailer wiring to car without this kit. Definitely plug-and-play. The hardest part was running the wire underneath the car, from the trunk to the battery. No doubt much easier if you have a lift, but difficult using jacks or ramps.
Easy time install. Working as advertised. Time will tell on durability. Purchased via phone order. The staff at etrailer were knowledgeable and professional. Thanks!!
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