Without Pulse
WIPERWhen the Wiper Switch is in "LO," battery voltage is applied to the Park Switch through CKT 113 and to the Park Switch contacts through CKT 95. The Park Switch closes its contacts, which supplies battery voltage to the Wiper Motor though CKT 196. The motor operates at low speed.
When the Wiper Switch is turned to the "OFF" position, the Park Switch is de-energized. This causes the mechanism to shift the Wipers toward the depressed Park position. When the depressed Park position is reached, the Park Switch opens the motor circuit, stopping the Wipers.
With the Wiper Switch in "HI," battery voltage is applied directly to the Wiper Motor, at terminal "A" without passing through the Park Switch contacts. Terminal "A" is connected to a separate Wiper Motor brush for high speed operation. The Park Switch coil remains energized in the "HI" position because of the voltage that is present at the low speed Wiper Motor brush when voltage is applied to the high speed brush. The current path from the low speed brush to the Park Switch coil is completed through the Wiper Switch Assembly.
The Wiper Motor is protected by a Circuit Breaker. The Circuit Breaker opens if the Wipers are blocked (by ice on the windshield, for example). The Circuit Breaker resets automatically when it cools.
WASHER
The Washer Motor is energized whenever the Washer switch is pressed and runs as long as the Washer Switch is closed. Battery voltage is applied through the Washer Switch and CKT 94 to the Washer Motor.
Pressing the Washer Switch will also move the Wiper Switch to the "LO" position to start the Wipers. The Wipers must be turned OFF manually after the wash cycle.