A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
Terminal (circuit) 30
Battery Positive voltage (B+), hot at all times
Terminal (circuit) 31
Ground (GND)
Terminal (circuit) 50
Starter control; switched B+ from ignition/starter switch
Terminal (circuit) 56
Switched headlight B+ from light switch
Terminal (circuit) 58
Switched parking light, taillight. illumination B+ from light switch
Terminal (circuit) S (SU)
Key in ignition circuit; switched B+ from ignition/starter switch
Terminal (circuit) X
Load reduction circuit; switched B+ from load reduction relay