This electrical part serves as a standardized interface facilitating the connection between a towing car and a trailer. It’s particularly engineered with seven pins to ascertain numerous circuits essential for secure and compliant trailer operation. These circuits sometimes embrace features reminiscent of tail lights, brake lights, flip alerts (left and proper), reverse lights, electrical brakes, and an auxiliary energy provide for trailer equipment like inside lights or a breakaway system.
The sort of connection is important for making certain highway security by permitting the driving force to keep up full management over the trailer’s lighting and braking techniques. Its standardized configuration promotes compatibility throughout completely different car and trailer fashions, simplifying the method of connecting and disconnecting trailers. Traditionally, this customary developed to embody the rising electrical calls for of recent trailers, transferring past easy lighting circuits to include extra superior security options and energy choices.