TOOGOO(R) 7-Pin Trailer Plug 7-Pole Wiring Connector 12V Towbar Towing Caravan Truck Plug N Type Trailer End Plastic Establishes a secure connection between your major vehicle and the additional trailer; Transfers the electronic signal lights from the vehicle to trailer. Plastic construction prevents rusting, enhances appearance and makes plug removal a snap. Supplies power to your caravan, towing and truck. Brass pins in a durable housing. Waterproof for all road and weather conditions.