Wiper/Washer Systems: Description

The 2-speed intermittent windshield wipers/washers are standard equipment. The intermittent function of the wiper system provides an adjustable pause between wipe cycles for use in light precipitation. The intermittent wiper/washer circuit consists of 4 main components: wiper switch, wiper module, wiper motor and washer pump.

The wiper switch, module and washer switch receive power from circuit breaker No. 24, when ignition switch is in the RUN or ACC position. When the wiper switch is put in the HI position, current flows from the fuse block through the wiper switch to the HI speed brushes of the wiper motor. When the wiper switch is put in the INT (intermittent) position, current flows from the fuse block through the wiper switch to the wiper module.

The timer in the wiper module, momentarily applies battery voltage to the LO speed brushes of the wiper motor to complete a cycle. The time between wipes is controlled by a rheostat in the wiper switch. A park/wipe switch in the wiper motor gear box is driven by the wiper motor. The switch provides ground to the wiper module when the wiper switch is moved to the OFF position.