This wiring diagram depicts the connection between a 5-pin trailer connector and a truck's electrical system. The 5-pin trailer connector is commonly used for trailers that require additional functions beyond basic lighting, such as electric brakes or auxiliary power. In this setup, the wiring arrangement of the 5-pin connector typically includes the following wires: ground wire, tail light wire, left turn/brake light wire, right turn/brake light wire, and an auxiliary power wire. The ground wire is connected to the truck's chassis ground, while the tail light, turn signal, and brake light wires are connected to their respective truck circuits. The auxiliary power wire is used for powering accessories on the trailer, such as interior lights or electric brakes.
