There are two types of 7-way connectors. One has flat pin and the other has round pins. The following schematic shows a Typical 7-Way Trailer . 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

7-way trailer wiring diagram

7-Way Trailer 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

Keywords:

Related posts:

1994 Mitsubishi Montero Wiring Diagram
Daihatsu Rocky Feroza Sportrak F300 Harness and Wiring Diagram
1991 Land Rover Defender Terminal Box and Cable Harness Diagram
2004 Subaru Forester Wiring Diagram and Cable Routing
Nokia X3 Circuit Board Schematic Diagram PCB Layout