Wiper/Washer Systems: Operation: Trooper

With ignition on, power is supplied from FRT WIPER/WASHER fuse (15-amp) to front wiper switch, wiper motor and alarm and relay control unit. With wiper switch in LO or HI position, battery voltage is applied to LO or HI winding of wiper motor. When switch is set to MIST position, battery voltage is applied to LO winding and wipers will sweep windshield as long as lever is held up. When wiper switch is moved to INT position, battery voltage is applied to alarm and relay control unit. Intermittent wiper relay will operate front wipers every few seconds, or INT switch can be adjusted between 2-20 seconds of delay on models with variable intermittent wipers. When washer switch is depressed and held, battery voltage is applied to front wiper washer motor and alarm and relay control unit. This operates front washer motor and wipers, until switch is released.

With ignition on, power is supplied from RR WIPER/WASHER fuse (10-amp) to rear wiper switch, rear wiper motor and rear intermittent relay. When rear wiper/washer switch is depressed, battery voltage is applied to rear intermittent relay which operates rear wiper intermittently. When WASH is depressed, washer motor pumps washer solvent to rear window and operates rear wiper motor until switch is released.