With Pulse

Whenever the Ignition Switch is in the "ON" or "START" position, battery voltage is applied through the WIP Fuse to the Front Wiper/Washer Switch and the Front Wiper Motor.

Washer Operation
When the Front Wiper/Washer Switch is pulled, battery voltage is applied through the Front Wiper/Washer Switch to the Front Washer Pump. The Front Washer Pump is permanently grounded at G102 and will operate as long as the Front Wiper/Washer Switch is pulled back. The windshield wipers will also operate at LOW speed as long as the Front Wiper/Washer Switch is pulled back.

Low Speed Operation
With the Front Wiper/Washer Switch in the "LO" position, battery voltage is applied through the WIP Fuse, and the LOW contacts of the Front Wiper/Washer Switch to the LOW side of the Front Wiper Motor. The motor operates at LOW speed as long as the switch remains in this position.

High Speed Operation
With the Front Wiper/Washer Switch in the "HI" position, battery voltage is applied through the WIP Fuse, and the HIGH contacts of the Front Wiper/Washer Switch to the HIGH side of the Front Wiper Motor. The motor operates at HIGH speed as long as the switch remains in this position.

Intermittent Operation
With the Front Wiper/Washer Switch in the "INT" position, battery voltage is applied through the WIP Fuse to the coil of an electronic relay in the Intermittent Controller and to a condenser also in the Intermittent Controller. The condenser charges to voltage and the relay is energized as soon as power is applied. When the switch in the energized relay closes, voltage is applied through the BLU wire to the Front Wiper Motor LOW side. The wipers begin to operate at LOW speed.

By the time the Wiper Motor makes one complete rotation (and the Front Wiper Motor Pawl and Switch has engaged), the condenser in the Intermittent Controller has discharged. This discharge in the condenser causes the Intermittent Controller Relay coil to de-energize, and the switch in the relay to open. Current flow to the wipers is then cut off until the condenser is recharged. In this manner, intermittent wiper operation is achieved through the charging and discharging of the Intermittent Controller condenser.