A 7-pin trailer plug with a rugged die-cast metal housing designed to protect internal wiring from impact and environmental stress, featuring high-conductivity brass pins for a secure connection that minimizes voltage drop and flickering lights. It's the male trailer-side connector for the standard 7-way electrical circuit (lights, stop, turn, and auxiliary functions), attached to the end of the trailer's electrical cable to mate with the tractor's 7-way socket.
