Operation CHARM: Car repair manuals for everyone.

Pulse Operation

With the wiper switch in DELAY (pulse), battery voltage is applied to the wiper motor at terminal B through CKT 143. Voltage also is applied to terminal D through CkT 113 and terminal E through CKT 112. The length of delay time between sweeps is controlled by the variable-pulse delay resistor. The delay is adjustable from 1-22 seconds.