Standard Wiring Diagram 7 Pole Plug. 1 trick that we 2 to printing a similar wiring plan off twice. Use this 7 pin trailer wiring diagram to properly wire your 7 pin trailer plug.
Click on the image below to enlarge it. The 7 pin connector uses on newer trailers all 7 pins according to the iso standard. Pictorial diagram of suggested wiring to pollak 7 pin socket.
This supplies power to the road lighting.
Trailers with electric brakes need them too. Wiring diagram for 7 pin flat trailer plug. The 7 pin connector uses on newer trailers all 7 pins according to the iso standard. Some rv manufacturers have a slight color code variation on the trailer end of the plug.