TRUCK BED EXTENSION. This trailer wiring harness is designed to be an extension of the existing tow wiring of your truck. It retains use of the rear 7-way RV blade socket, while adding an additional 7-way socket in the truck bed EASY TO INSTALL. No wire cutting! No splicing! This trailer plugs into existing factory wiring on your truck and has a 7-foot harness for flexible positioning in the truck bed (2-1/8-inch hole saw required for installation) HEAVY-DUTY CONNECTOR. The 7-pin trailer can be used to connect trailer taillights, brake lights, reverse lights, turn signals, electric trailer brakes and an auxiliary power wire CONSTRUCTION. For long-lasting use and a reliable connection, the housing of the 7-pin truck wiring socket is made from molded black plastic and has a spring-loaded dust cover to protect the connection points VEHICLE-SPECIFIC. This vehicle-trailer wiring extension harness is designed for select models of , , , , , Ram and vehicles, ensuring the easiest possible installation Colour: black Material: ABS Package Contents: 1 x Trailer Wiring Harness Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.