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Running trailer wiring can be a headache if you have to splice into factory wires. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector makes it easy—it simply plugs in-line with the existing tail light harness along the frame rail. No cutting, no guessing, and no exposed wiring. Once connected, you get a clean 4-way plug ready for trailer lights.
This harness gives you a standard 4-way flat connector that powers your trailer’s running lights, turn signals, and brake lights. It’s all you need to get trailer lighting up and running safely behind your vehicle.
If you ever need more than just lights—like trailer brakes or 12V power—you can easily add that later. Start with this 4-way harness, then use a kit like the ETBC7 to convert it to a 7-way setup. That opens the door for installing a brake controller or charging a trailer battery without redoing your wiring.
The connection point sits inside the driver-side rear frame rail, protected from the elements and tucked out of sight. It plugs right into the factory harness for a solid fit and reliable signal transfer to your trailer. It’s a straightforward install that looks like it came from the factory once finished.
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