Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2027 GMC Terrain
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2027 GMC Terrain
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Adding trailer lights doesn’t have to mean splicing into factory wiring. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs into existing vehicle wiring under the rear, giving you a ready-to-use 4-flat connection for trailer lights. It’s a simple plug-in setup that keeps your wiring intact and gets you towing faster.
Instead of routing wires through panels or drilling holes, this harness connects to the factory plugs located under the vehicle behind the spare tire. That keeps everything neat and tucked away, with no exposed wiring hanging off the bumper. It looks clean and works like stock once installed.
The harness includes a built-in converter that properly transfers power for running lights, turn signals, and brake lights to your trailer. The 4-flat connector handles the basic lighting functions most small and medium trailers use, and it can plug directly into a 7-way kit like the Universal Installation Kit for Trailer Brake Controller # ETBC7 if you decide to add brakes or a charge line later.
Curt’s wiring harnesses are known for solid connectors and dependable performance. The # C56FR includes a 1-year limited warranty and is designed to deliver reliable lighting every time you hook up your trailer. It’s a straightforward solution that works the way it should every trip.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
Great.. fits like OEM, just plug it in. Came with a zip ties to tuck the wiring.
hardest part of the install is running the positive wire to the battery. adhesive pad for the converter box is kind of a joke so it would be nice if it came with additional self tapping screws
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