Windshield Wiper System

The two-speed, permanent magnet, three brush electric windshield wiper motor has a brush rigging that permits selection of low- or high-speed. When the control selector is in LO position, the grounded brush and the white wire brush are used and the motor operates at low-speed. When the control selector is in HI position, the grounded brush and the blue/orange wire brush are used. Current bypasses a portion of the armature winding causing the motor to run faster. When the control selector is moved to the OFF position, the motor will continue at low-speed until the park switch outer contacts open, stopping the motor in the PARK position.