Regal V6-231 3.8L Turbo VIN 8 4-bbl (1983)
Wiper Motor: Description and Operation
Standard Non-Pulse Wiper
Fig. 2 Rectangular windshield wiper motor electrical connections
Operation:
Placing wiper switch in low position grounds motor terminals 1 and 3, Fig. 2, at the wiper switch. Shunt field current flows directly to ground through
terminal 3, armature current flows to ground through terminal 1 and the motor runs at low speed. Placing wiper switch in high position grounds terminal
1, but terminal 3 remains open. Armature current flows directly to ground through terminal 1, shunt field current flows to ground through a resistor
connected between terminals 1 and 3, and the motor runs at high speed due to the weakened shunt field.
When wiper switch is turned off, and wipers are not in park position, terminal 1 is grounded through the closed motor park switch contacts. Terminals 1
and 3 are connected through the wiper switch, and the motor runs at low speed. When wipers reach their lowest point of travel, a cam on the motor
output shaft opens the park switch, and the motor stops.
