TIROL 7 Pin Trailer Plug PLASTIC 7 Way Blade Round Connector Plug Male 12V Towbar Towing - Trailer End 7-Pole Blade RV Trailer 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.