Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2023 GMC Acadia
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2023 GMC Acadia
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Running new trailer wiring can be a headache, but this harness skips all the guesswork. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs right into the factory connection point behind the rear bumper on the driver’s-side frame rail. There’s no need to cut or alter any wires—just plug it in and you’re ready to tow.
This harness gives you a standard 4-flat connector that handles all the basics—running lights, turn signals, and brake lights. It’s built so that signals work correctly together, including maintaining turn signal function even while braking. That means your trailer lights stay in sync and visible for safer towing.
If you plan to tow heavier trailers later or need electric brakes, this harness makes that easy too. Once you have this 4-way installed, it becomes the base for adding a 7-way connector using a kit like the ETBC7. That setup supports brake controllers and adds a 12-volt power line for extra accessories.
Because it connects at the factory wiring port, the Curt harness routes cleanly along existing paths instead of running loose wires under the vehicle. The result is a neat, factory-style finish with solid connections that hold up over time.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Franz H.
5/24/2018
Great thanks
Bruce
5/11/2024
It is still working fine. The Weaterpack seals on the harness are still water tight and the flat plug works perfectly.
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Micah
5/18/2022
Works great. My 9 year old son wired it up for me with little supervision. Still works great after a years worth of hauling. No blown fuses.