Connects to the reverse lamp's positive wire to automatically switch the display to the backup camera.
These are the most critical connections to ensure your head unit turns on and retains its settings . Pioneer Avh X3600bhs Wiring Harness Diagram
Your Metra adapter has a yellow wire (constant) and a red wire (ignition). You connect them to Pioneer yellow and red. The GM adapter’s orange/white (dash dimmer) connects to Pioneer orange/white. This is why the universal color code works. Connects to the reverse lamp's positive wire to