Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2002 Ford Excursion
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2002 Ford Excursion
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Wiring a trailer can be a pain if you have to cut into factory wiring, but this harness skips that. The Curt T-Connector plugs directly into your vehicle’s existing tail light connectors to give you a 4-flat trailer connection. No cutting, no wire tracing—just plug it in and you’re ready to go for running lights, turn signals, and brake lights.
Modern vehicles use sensitive wiring systems, so Curt includes a powered converter that draws power directly from the battery instead of the tail light circuits. The included power wire and fuse run up to the engine bay and connect to the positive battery terminal. That keeps the vehicle’s lighting system isolated from trailer load, preventing blown fuses or feedback through the wiring.
The 4-flat connector is the standard hookup for most small and midsize trailers. It handles the essentials—running lights, left and right turn signals, and brake lights—while staying simple and compact. It’s also easy to test or replace if needed down the road.
Even if your vehicle didn’t come with a tow package, this harness makes it straightforward to add one. The plug-and-lead design connects behind the tail lights and runs cleanly through existing panels or grommets for a neat finish. Most folks can have it installed and working with basic tools in an afternoon.
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