System Outline

When the ignition SW is turned on, current flows to TERMINAL 17 of the wiper and washer SW and TERMINAL 2 of the windshield wiper motor through the FR WIP fuse. The current flows to TERMINAL 1 of the windshield washer motor through the FR WSH fuse.

Low Speed Position
When the wiper and washer SW is turned to the LO position, current flows in TERMINAL 17 of the wiper and washer SW, out TERMINAL 7 to TERMINAL 1 of the windshield wiper motor, and finally out TERMINAL 5 to GROUND and causes the windshield wiper motor to run at low speed.
High Speed Position
When the wiper and washer SW is turned to the HI position, the current flows in TERMINAL 17 of the wiper and washer SW, out TERMINAL 8 to TERMINAL 4 of the windshield wiper motor, and finally out TERMINAL 5 to GROUND and causes the windshield wiper motor to run at high speed.
INT Position
When the wiper and washer SW is turned to the INT position, the wiper relay activates and current flows in TERMINAL 17 of the wiper and washer SW then out TERMINAL 2 to GROUND. This activates the intermittent circuit and the current which flows in TERMINAL 17 of the wiper and washer SW then out TERMINAL 7 to TERMINAL 1 of the windshield wiper motor and finally out TERMINAL 5 to GROUND activating the wipers. The intermittent operation is controlled by the charging and discharging of a condenser installed in the relay.
Washer Continuous Operation
When the wiper and washer SW is pulled to the WASHER position (Washer SW ON position), the current flows from the FR WSH fuse to TERMINAL 1 of the windshield washer motor then out TERMINAL 2 and into TERMINAL 11 of the wiper and washer SW. It then flows out TERMINAL 2 to GROUND and causes the windshield washer motor to run and the window washer to spray water onto the windshield. Simultaneously, current flows from the FR WIP fuse to TERMINAL 17 of the wiper and washer SW, out TERMINAL 7 to TERMINAL 1 of the windshield wiper motor and then out TERMINAL 5 to GROUND, causing the wipers to function.