Power up trailer light: make connection between trailer plug and vehicle, socket, light up tail lights, brake lights, turn signals and reverse lights. If your vehicle has the 7-Pole RV Blade Socket, and your trailer has the 7 pin round plug, where your vehicle need to separate the stop and tail signals, this Trailer Wiring Adapter need to be use. Item Type: Trailer Adapter Connector Condition: Flexible wire provides larger turning radius, making it more convenient for use. Made of quality plastic and metal material, the adapter cable is impact and . Widely application, suitable for most trailers, semitrailers, RV. Plug and play, not required to install any wiring inside of the car and trailer. Installation Guide: a) Before connecting the Converter to the vehicle, check that all signals on the car have been turned off. b) Connect the Converter to the existing 7 way RV blade socket in the vehicle. c) Insert the other side trailer plug into the socket Converter. d) Check that all connections are safety fastened. e) When exploitation, maintenance of the electrical adapter is not required. Color: Black Material: Plastic + Metal Package Contents: 1 * Trailer 7 Pin Round Socket Only the above package content, other products are not included. Note: Light reflection 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.