BMW E46 Wagon Rear Windshield Wipers

More info on the BMW E46 Front Windshield Wipers

The rear window wiper is switched off when the rear window is open (S147). After closing the rear window, the rear window wiper is not switched on again before it is switched off and on at the wiper switch (S5) or before terminal R is switched off and on. The rear window contact is connected directly to the control unit (A36) for the rear window wiper.
S147 is the switch that detects if the rear window is open, S5 is the wiper stalk on the steering column, M95 is the rear washer pump motor, A1 is the General Module 5. The A36 module sends the current status of the rear window ajar sensor to the general module over wire WSK.