7 Pole Trailer Wiring Diagram | Trailer Wiring Diagram 7 Pole Trailer Wiring Diagram – 7 pole flat trailer wiring diagram, 7 pole round pin trailer wiring connector diagram, 7 pole round trailer plug wiring diagram, Folks understand that trailer is a car comprised of quite complicated mechanisms. This vehicle is designed not just to travel 1 location to another but also to take heavy loads. This article will be discussing 7 Pole Trailer Wiring 7 Way Plug Wiring Diagram - Country Trailer Sales PDF file7 Way Plug Wiring Diagram Standard Wiring* Post Purpose Wire Color TM Park Light Green (+) Battery Feed Black RT Right Turn/Brake Light Brown LT Left Turn/Brake 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. 7 Way Trailer Plug Wiring Diagram Ford F250 - Wiring Diagram 7 way trailer plug wiring diagram ford f250. 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.