Wiper and Washer Systems: Description and Operation

Windshield Wiper/Washer System
The circuit consists of the starter switch, windshield wiper + washer switch, windshield wiper motor, windshield washer motor and windshield intermittent relay.
When the wiper + washer switch is turned on with the starter switch on, the battery voltage is applied to the wiper motor to activate the wiper.
The washer motor squirts glass cleaning fluid while the washer switch is being pushed. The intermittent relay is used to control motion of the wiper.