EXTERIOR LAMPS - Headlamp Levelling (page 2 of 2)

At each of the four switch positions, the contacts in the headlamp levelling switch connect to a different resistance value to provide one of four different output voltages. The output voltage (C0093-2) is supplied to the LH (C0071-1) and RH (C0070-1) levelling motors on blue/yellow wires. The LH (C0071-2) and RH (C0070-2) headlamp levelling motors are earthed on black wires. The difference between the voltage from the headlamp levelling switch and battery voltage is then used by electronics in the headlamp levelling motors to set the headlamps to a position corresponding to the switch position.