Version 1 - AWS 12

The AWS control unit (relay) is mechanically and electrically identical to the interval wipe control unit installed in the vehicle.

Replace the original wipe control unit with the rain sensor AWS control unit. You can find the installation location using the vehicle operating instructions or you can switch on the "Interval" wipe function and listen to the relay switching noises. Since the relay box contains several relays in a very small space, the exact position can be felt by touching the relay boxes with your finger. Rain sensor "ON" = wiper switch in position "Interval

IMPORTANT
Which version fits to your vehicle, you can find here :
Adjustment