We use a lot of these in our halloween scares for our walk through haunted house. Inside the motorgear assembly is an electronic circuit that senses when the wipers are in their down position.
Wiper Motor Wiring Diagram 85 Ford Wiring Diagram
Park switch wiper motor. Also has low speed and high speed toggle. With the wiper switch in the high position check for voltage at the terminal with the ulg wire. Off position will park the wipers. Remove wire connector and connect jumper wire from motor terminal l to terminal p2. Once you turn the wiper motor off the motor still needs voltage to return the wipers back to the park position. Wiper motor will continue to operate with switch in off position 1.
Then you likely need to replace the windscreen wiper park switch located on the wiper motor. A separate wire provides that voltage until it reaches the park position and then the switch breaks the connection. Check for continuity to ground at the terminal with the black wire. Wiper motors are devices in the wiper system that functions on a power supply in order to move the wiper blades in a smooth motion. It keeps power to the motor until the wipers come to the parked position then cuts power. Like other motors the wiper motor rotates continuously in one direction which is converted into a back and forth motion.
Inside the wiper motor is a park switch. Notice the cam pointer. Connect a second jumper wire from terminal p1 to battery. The output of the gear reduction operates a linkage that moves the wipers back and forth. By gripping the gearwheel in one hand and rapping on the end of the center shaft with a small hammer the gear need only be separated a small distance from the wheel. A if there is no voltage present then the problem lies within the dash switch the power feed to the dash switch or the wiring between the dash switch and the wiper motor.
The part number for the wiper park switch that i found for my. The worm gear reduction can multiply the torque of the motor by about 50 times while slowing the output speed of the electric motor by 50 times as well. A short tutorial on how to wire up a windshield wiper motor including the park feature. This is the part that activates the switch from the previous photo see photo 4. This is an easy 10 minute job to replace. This is the switch that is operated by a cam on the underside of the gear wheel.
Gallery of Park Switch Wiper Motor
