Washer Operation

The WASH lever on the washer switch normally operates when the wiper switch in the OFF position. This applies a full battery voltage on CKT 96 (BRN) to the windshield wiper motor. This also provides voltage on CKT 92 (PPL) through a diode in the wiper switch contact set.

This combination of voltages causes the wipers to operate at high speed and the windshield washer pump motor to operate. When you release the washer switch, the pump stops. The wipers complete the wipe cycle. Two or 3 wipe cycles follow the release of the washer switch and the stopping of the washer spray.