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Wiring up a trailer doesn’t have to mean cutting into factory wires. The Curt T-Connector Vehicle Wiring Harness with a 4-Pole Flat Trailer Connector plugs straight into existing vehicle connectors, giving you trailer lighting without tapping or slicing into the wiring. It’s a clean, straightforward install that keeps the factory setup intact.
The 4-flat connector gives you the standard lighting functions needed for towing—running lights, brake lights, and turn signals. It’s the most common style for small and midsize trailers and provides a reliable, weather-tight hook-up every time you hitch up.
Because this harness is designed with a direct plug-in layout and no converter, it delivers a simple electrical path between your vehicle and trailer. That means fewer components, fewer points of failure, and an easier install that still gets the job done right.
The plug-and-lead setup makes this harness friendly for weekend installers. Just connect the T-plugs on each side and route the 4-flat lead where you need it. It’s quick, hassle-free wiring that helps you get your trailer lights working in no time.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
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Paul
7/30/2025
Hitch has remained in great shape and continues to work flawlessly.