Standard 7 Pin Trailer Wiring Diagram. Heres the diagram for 7 pin connector. This is a wiring diagram for a 12n 7 pin standard trailer socket.
Brown pin for unwanted markers tail lights and running lights. Brown pin for unwanted markers tail lamps and running lights. 7 way plug wiring diagram standard wiring post purpose wire color tm park light green battery feed black rt right turnbrake light brown lt left turnbrake light red s trailer electric brakes blue gd ground white a accessory yellow this is the most common standard wiring scheme for rv plugs and the one used by major auto manufacturers today.
If your truck has a built in 7 pin socket but you only need 5 of the pins.
In these cases exclude connection for right tail light 58r and rear fog light 54g and connect the tail. Brown pin for unwanted markers tail lights and running lights. White pin to your ground. In all cases the terminals will be numbered.