Universal 7-Pin Trailer Plug, 7-Way RV Trailer Light Connector Receptacle, 7-Pin Trailer Plug Wiring Harness Adapter Quick Converter for Boat/Trailer/RV/Truck/Semi/Trailer/Car/RV 7-Pin Trailer Plug, made of high quality plastic, integrated design, easy to plug and unplug wiring system, high quality tin-plated copper terminals with black sealing tubing, well-sealed spring-loaded dust cover protects the connector, protects the connection points for good electrical conductivity. The 7-pin trailer wiring receptacle is ready to connect to your existing vehicle wiring, suitable for connecting taillights, brake lights, back-up lights, turn signals, trailer brakes and auxiliary power, voltage range:6-24 volts 7-Way Automotive Trailer Wiring Connector Tail Wiring Harness with 7-wire RV standard color wiring, 7-Pin Trailer Plug Adaptor, easy to install, typically used with a T-type connector or taillight converter, in the Universal mounting holes, kit includes mounting brackets, screws and nuts