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Wiring up trailer lights doesn’t have to mean cutting into your factory wiring. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs directly into the vehicle’s existing light connectors. This hidden, plug-and-lead setup keeps your factory wiring intact and gets you a working 4-flat trailer connection that’s ready for running lights, turn signals, and brake lights.
Many modern vehicles use lightweight wiring that can’t handle the extra load from trailer lights. This harness includes a powered converter that draws power directly from the battery instead of the vehicle’s lighting circuits. That setup protects the car’s internal wiring while giving the trailer the full power it needs for proper lighting. The inline fuse safeguards the module—if it ever blows, it only cuts power to the trailer side, never to your vehicle lights.
The included power wire runs neatly from the rear of the vehicle up to the battery, giving a direct power source for the converter. You can route it through the interior or underneath using existing grommets, keeping clear of heat and moving parts. It’s a straightforward job that keeps the install tidy and reliable over time.
Out of the box, this harness gives you a standard 4-pole flat connector for trailer lighting circuits. If you ever need to tow something with electric brakes or charge a trailer battery, it can easily be expanded using an adapter kit like an ETBC7 to add a 7-way connection. The Curt harness gives you a solid foundation for any towing setup down the road.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
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Rich Y.
8/19/2020
Quite well actually,but I traded in my Honda aweek or so ago.