TIROL 7 Pin Trailer Plastic Socket 7 Way Round Trailer Connector Female 12V Towbar Towing - Vehicle End 7-Pole Blade RV Vehicle End Connector, Brass contacts to prevent corrosion. Built in cable clamps, Accepts standard 7-way RV trailer connector, and Accepts wide range of wire gauges. Splices into vehicle wiring to provide a connection for a trailer plug. 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power. Interchangeable with other 7-way RV connectors.