Operation CHARM: Car repair manuals for everyone.

Pulse Operation

With the wiper switch in DELAY (pulse), battery voltage is applied to the wiper motor through the ignition positive voltage circuit. Voltage also is applied through both wiper speed signal circuits.

The length of the delay time between sweeps is controlled by the variable pulse delay resistor in the wiper/washer switch. The delay is adjustable from 1 to 22 seconds.