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Running trailer wiring can get messy fast if you have to cut into factory wires. This Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector is built to plug right into existing connectors, so you don’t have to splice a thing. It’s a clean, plug-and-play setup that keeps your wiring hidden and protected.

A powered converter is integrated into the harness, which means it can safely draw the power needed for the trailer lights even if your vehicle doesn’t have a tow package. It delivers the correct signals for running lights, turn signals, and brake lights through the 4-flat connector without overloading your factory circuits.
The 4-flat connector covers the basics most small to mid-size trailers need—running lights, turn signals, and brake lights—all from a single plug. It’s the standard connection that keeps your setup simple and dependable whenever you’re towing a utility trailer, boat trailer, or small camper.
With its hidden, plug-in style and solid connectors, this harness keeps everything tucked away neatly behind panels and trim. That not only looks better but also keeps the wiring safe from dirt, water, and snags while you’re on the road.
This will not affect how the tail lights on your vehicle operate.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
A++++++++++++++++++++++++++++++++++++++ ++++++
Great communication and very prompt sho pping.
Easy to install. Fits perfect.
Fit well. However your instructions are not correct for my 2025 Honda Civic Hybrid Hatchback.
You need to correct this for the New 2025 Hatchback.
Info for this part was:
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