With the ignition switch in the ON position, B+ is applied to terminal 8 of the windshield wiper motor relay K8. B+ is also applied to terminal 4 of the windshield wiper and windshield washer switch. With the windshield wiper and windshield washer switch in the INTERVAL position, B+ is applied to terminal 6 of the interval switch. The interval switch then sends a voltage signal to terminal 1 of the windshield wiper motor relay K8. The windshield wiper motor relay K8 interprets this signal as the time of delay for the wipers. The windshield wiper motor relay K8 outputs B+ from terminal 2 to terminal 8 of the windshield wiper switch. The windshield wiper switch then applies the voltage through circuit B7 to terminal A of the windshield wiper motor. The length of delay time is determined by the voltage signal the windshield wiper motor relay K8 receives from the interval switch.

With the ignition switch in the ON position, B+ is applied to terminal 4 of the windshield wiper and windshield washer switch. B+ is also applied to terminal D of the windshield wiper motor and terminal 8 of the windshield wiper motor relay K8. When the windshield wiper switch is in the LOW position, B+ is applied to through circuit B7 to terminal A of the windshield wiper motor. The windshield wiper motor operates the wipers at LOW speed until the windshield wiper switch is turned to the OFF position.

When the windshield wiper and windshield washer switch is turned to the OFF position, the windshield wiper motor relay K8 monitors the voltage at terminal C of the windshield wiper motor. The voltage on terminal C of the windshield wiper motor, is determined the position of a internal switch (voltage will remain at 12V until the motor enters the PARK position). When the windshield wiper motor relay K8 sees 12V on terminal C of the windshield wiper motor, the windshield wiper motor relay K8 outputs B+ from terminal 2 to the windshield wiper switch terminal 8. The windshield wiper switch then applies the voltage through circuit B7 to terminal A of the windshield wiper motor , causing the windshield wiper motor to continue running. When the windshield wiper motor goes in the PARK position, the position switch closes to ground and the monitored voltage on terminal C of the windshield wiper motor goes to 0V. The windshield wiper relay K8 turns off B+ from terminal 2 of the relay to terminal 8 of the windshield wiper switch. Voltage is no longer applied through circuit B7 to terminal A of the windshield wiper motor and the motor stops in the PARK position.

With the ignition switch in the ON position, B+ is applied to terminal 4 of the windshield wiper and windshield washer switch. B+ is also applied to terminal D of the windshield wiper motor and terminal 8 of the windshield wiper motor relay K8. When the windshield wiper switch is in the HIGH position, B+ is applied through circuit M9 to terminal E of the windshield wiper motor. The windshield wiper motor operates the wipers at HIGH speed until the windshield wiper and windshield washer switch is turned to the OFF position.

When the windshield wiper and windshield washer switch is turned to the OFF position, the windshield wiper motor relay K8 monitors the voltage at terminal C of the windshield wiper motor. The voltage on terminal C of the windshield wiper motor, is determined the position of a internal switch (voltage will remain at 12V until the motor enters the PARK position). When the windshield wiper motor relay K8 sees 12V on terminal C of the windshield wiper motor, the windshield wiper motor relay K8 outputs B+ from terminal 2 to the windshield wiper switch terminal 8. The windshield wiper switch then applies the voltage through circuit B7 to terminal A of the windshield wiper motor , causing the windshield wiper motor to continue running. When the windshield wiper motor goes in the PARK position, the position switch closes to ground and the monitored voltage on terminal C of the windshield wiper motor goes to 0V. The windshield wiper relay K8 turns off B+ from terminal 2 of the relay to terminal 8 of the windshield wiper switch. Voltage is no longer applied through circuit B7 to terminal A of the windshield wiper motor and the motor stops in the PARK position.

With the ignition switch in the ON position, B+ is applied to terminal 8 of the windshield wiper motor relay K8. B+ is also applied to terminal 4 of the windshield wiper and windshield washer switch. When the windshield wiper and windshield washer switch is in the MIST position, B+ is applied through circuit FA4 to terminal 6 of the windshield wiper motor relay K8. B+ is also applied to terminal 1 of the windshield washer pump.

When B+ is applied to terminal 1 of the windshield washer pump, the windshield washer pump operates and sprays windshield washer fluid on the windshield. Terminal 2 of the windshield washer pump is permanently grounded to G103.

When B+ is detected at terminal 6 of the windshield wiper motor relay K8, the windshield wiper motor relay K8 outputs B+ from terminal 2 to terminal 8 of the windshield wiper and windshield washer switch for approximately 5 seconds. The windshield wiper switch applies the voltage through circuit B7 to terminal A of the windshield wiper motor. The windshield wiper motor operates the wipers for approximately 5 seconds and then returns the wipers to the PARK position.

The heated windshield washer nozzles prevent nozzle freeze-up in cold weather. When the ignition switch is in the ON position, B+ is applied to both of the windshield washer nozzles. The windshield washer nozzles are permanently grounded to G103.