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 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 Diagram

7-way trailer wiring diagram

7-Way 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

2000 Honda XR-650R Electrical Wiring Diagram
Toyota Automatic Transmission A340E Shift Lock System Wiring Diagram
Starter Solenoid Test on 2002 Acura RSX K20A2 Engine
2009 Mazda RX-8 Engine Compartment Fuse Block and Panel Diagram
Nissan Cube Z12 Series Traction Control Wiring System