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Your cart is empty.If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Chevy Express and GMC Savana 1500, 2500, 3500 and 4500 (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
Shane W.
Reviewed in the United States on February 28, 2025
No wire splicing needed and easy to install. fit perfect on my 2022 GMC Savana
Ricky T.
Reviewed in the United States on February 10, 2025
Works great
ATENAS AVILA
Reviewed in the United States on August 31, 2024
The CURT 55540 Vehicle-Side Custom 4-Pin Trailer Wiring Harness is perfect for my Chevrolet 2500. Installation was a breeze—everything fit seamlessly, and the wiring harness works flawlessly.The 4-pin connector is reliable and provides a solid connection for all my trailer lights. It’s been a real game-changer for towing, ensuring all my lights function properly and improving overall safety.If you need a dependable wiring harness for your Chevy 2500, this one is highly recommended. It’s durable, easy to install, and does exactly what it’s supposed to do
Karen Marker
Reviewed in the United States on August 13, 2024
arived quickly and easy to in stall
Mr Fugal
Reviewed in Canada on July 1, 2024
I tried to use taps and wires to connect to the existing harness in my 2021 Chevy Express van, and after spending $30 on bits and bobs and dicking around for three plus hours trying to get it to work, I gave up and bought this. I unplugged the connectors to the tail lights, plugged in the adapter pieces, routed the wire and was done in 45 minutes. The lights worked perfectly.
Derrick Wells
Reviewed in Canada on March 18, 2024
Very easy to install and works as it should.
Chris
Reviewed in the United States on November 27, 2024
This plug and play harness makes installing trailer electrics easier. It's my first time doing the install this way, big fan here.
Bill
Reviewed in the United States on November 26, 2024
Not often do I buy product off Amazon that actually works as well as it does everything fit it was like a 15 minute install
mark plummer
Reviewed in the United States on October 2, 2024
This was absolutely easy to install. It took me 20 minutes. I would highly recommend.
Bilan Group Inc
Reviewed in Canada on August 28, 2023
Had an issue with a broken plug but they replaced it in one day
71 nova
Reviewed in Canada on August 16, 2023
Simple and easy to install
Saavedra
Reviewed in the United States on September 23, 2019
Easy hook up, no issues thus far.
JLU114
Reviewed in Canada on August 2, 2019
Install this trailer wiring harness on my 06 Gmc Savana van , hooked right up to the rear tail light harness on either tailight plug and play , just had to tuck it all in neatly into the roof zip ties included
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