Operation CHARM: Car repair manuals for everyone.

LOW Speed Operation

When the windshield wiper washer switch is in the low position voltage is supplied from the switch through the low speed supply circuit to the windshield wiper motor. When the windshield wiper washer switch is moved to the off position the windshield wiper motor relay continues to supply voltage to the low speed supply circuit until the wiper motor position switch closes to ground indicating the windshield wipers are in the park position.