4-pin flat adapter output connects the taillights, brake lights and turn signals of the trailer
Adapts 7-pin vehicle trailer harness to fit a 4-pin flat trailer connector
custom-designed adapter that converts a 7-pin trailer harness to a 12-Volt power outlet
Simple plug-and-play design eliminates the need for cutting or splicing
Power up with GMC Accessories Trailer Wiring Electrical Adapter. Utilize your trailer wiring harness to power other devices through the custom-designed adapter that converts a 7-pin trailer harness to a 12-Volt power outlet. The 7-pin round to 4-pin flat adapter allows for easy connection of trailer wiring harnesses that only require a 4-pin connector.