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Adding trailer wiring doesn’t have to mean cutting into factory wires. This Curt T-Connector plugs right into the vehicle’s existing connectors to give you a working 4-flat trailer plug. No wire splicing or tracing circuits—just quick, clean connections that are ready to go as soon as they’re clicked in place.
The harness uses a powered converter that draws power directly from the vehicle’s battery instead of its lighting circuits. That means your trailer lights get the power they need without overloading sensitive vehicle electronics. The separate 12-volt wire helps protect the OEM wiring while keeping everything working safely and reliably.
The integrated 4-flat connector gives you running lights, brake lights, and turn signals for most small and mid-size trailers. It’s the standard setup that works with a wide range of trailer plugs, making it easy to hook up and hit the road.
Once installed, the wiring stays tucked away behind panels or trim for a neat, hidden look. You can leave the plug loose for temporary use or mount it permanently with a simple 4-flat bracket for a more finished setup near the hitch.
The powered circuit is designed to sit idle until you connect a trailer, so it won’t pull current or drain the battery when parked. You can leave it installed full time and always be ready to tow without worrying about parasitic draw.

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