Cargo Trailer 7 Pin Wiring Diagram. 7 pin round trailer wiring diagram trailer light wiring trailer wiring diagram utility trailer. Red 12 volt auxiliary power.
White pin to your floor. Here is the diagram for 7 pin connector. White pin to your ground.
If your truck has a built in 7 pin socket but you only need 5 of the pins.
Use this 4 pin trailer wiring diagram to properly wire your 4 wire trailer plug. There is a noticeably larger gap between 1 and 6 on this plug though some trailer places rotate this connector that the yellow is at the top. Brown pin for unwanted markers tail lamps and running lights. Plug size is similar to an australian 10c coin.