With Pulse

In addition to the features of a conventional (non-pulse) wiper system (low and high speeds), the pulse-type Windshield Wiper/Washer System includes an operating mode in which the Wipers make single strokes with an adjustable time interval between strokes. The time interval is controlled by a Solid State Timer in the Wiper Motor Assembly. The duration of the delay interval is determined by the delay rheostat in the Wiper Switch Assembly.
The Wiper Motor is protected by a circuit breaker. If the Wipers are blocked (by snow or ice for example), the circuit breaker will open the circuit. The circuit breaker resets automatically when it cools.

PULSE

With the Wiper/Washer Switch in "PULSE," battery voltage is applied to the Wiper Motor Assembly at term "B" of Connector C1 through the 96 CKT. Voltage is also applied to term "F" through the 94 CKT and the pulse delay resistance in the Wiper Switch Assembly. The battery voltage at term "B" energizes the Park Switch Coil which closes its contacts. In response to the voltage at term "F," the Solid State Timer momentarily closes contact "A" on the Cover Assembly, which applies battery voltage at term "B" to the contacts of the Park Switch. The Wiper Motor starts.
A cam operates a contact on the Cover Assembly, which causes contact "A" to open when the Wipers have completed their sweep. Since the Park Switch Coil remains energized, the Wipers do not park but remain just above the "PARK" position until the Cover Assembly closes contact "A" again to start another sweep.
The length of delay time between sweeps is controlled by the variable Pulse Delay resistor. The delay is adjustable from 0 to 25 seconds.

LOW SPEED

With the Wiper Switch in "LO," battery voltage is applied at the Wiper Motor Assembly Connector C1 terms "B" and "C" through the 91 and 96 CKTs. The Park Switch Coil is again energized and battery voltage is applied to the Park Switch contacts and the Wiper Motor, which runs continuously.

HIGH SPEED

With the Wiper Switch in the "HI" position, battery voltage is applied directly to the Wiper Motor at term "A" without passing through the Park Switch contacts. Term "A" is connected to a separate Wiper Motor brush for high speed operation. Voltage is also applied through the low speed Wiper Motor brush to the Park Switch contacts and timer contact "A" to the Park Switch coil. The Park Switch coil remains energized in the "HI" position. The current path from the low speed brush to the Park Switch coil is completed through the Wiper Switch Assembly. An open in this circuit will cause the Wipers to cycle in and out of "PARK" in "HI" and possibly prevent low speed operation.

WASHER

When the Washer Switch is held "ON," battery voltage is applied to the Cover Assembly through CKTs 94 and 96. The Park Switch Coil is energized by the battery voltage at term "B" of Connector C1. The Cover Assembly turns on the Washer and Wiper Motors by closing contacts A" and "B." The Cover Assembly turns the Wiper Motor off approximately six seconds after it interrupts power to the Washer Motor. If the Wipers were in "PULSE," "LO," or "HI," they would return to that operation after the wash cycle.

MIST

When the control is moved to "MIST" and released, the Wipers make one sweep at low speed and return to "PARK." The circuit operation is the same as that of "LO."