High-Speed Operation

With the wiper switch in the HI position, battery voltage is applied directly to wiper motor without passing through the park switch contacts. Terminal A is connected to a separate wiper motor brush for high-speed operation. The park switch coil remains energized in the HI position because of the voltage present at the low-speed wiper motor brush when voltage is applied to the high-speed brush. The current path from the low-speed brush to the park switch coil is completed through the wiper/washer switch assembly. An open in this circuit will cause the wipers to cycle in and out of park position in HI and possibly prevent low-speed operation.