There are two types of 7-way trailer wiring connectors. One has flat pin and the other has round pins. The following schematic shows a Typical 7-Way Trailer Wiring Diagram. It should be noted that the center terminal is labeled as an auxiliary circuit but is most commonly used for backup lights not as a ground terminal as many try to use it.

7-Way Trailer Wiring Diagram

7-way trailer wiring diagram

7-Way Trailer Wiring Diagram Color Code

Color
white
blue
green
black
red
brown
yellow

Circuit Function
common ground
electric brake
tail/running lights
battery charge
left turn/stop
right turn/stop
auxiliary/back up



Related Post

2007 Arctic Cat ATV Wiring Diagram
2005 KTM 990 Superduke Motorcycle Wiring Diagram
Honda CD125S Electrical System and Wiring Diagram
CAR-PAK Electrical Wiring Harness and Sockets Catalog
2004 LLY 6.6L GM Trucks Duramax Fast Idle Wiring Diagram