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. Like other motors the wiper motor rotates continuously in one direction which is converted into a back and forth motion.
Wiper Motor Firebird Classifieds Amp Forums 1967 1968 And
Park switch wiper motor. 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. Connect a second jumper wire from terminal p1 to battery. Then you likely need to replace the windscreen wiper park switch located on the wiper motor. With the wiper switch in the high position check for voltage at the terminal with the ulg wire. Remove wire connector and connect jumper wire from motor terminal l to terminal p2. This is the part that activates the switch from the previous photo see photo 4.
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. Notice the cam pointer. A short tutorial on how to wire up a windshield wiper motor including the park feature. The output of the gear reduction operates a linkage that moves the wipers back and forth. Once you turn the wiper motor off the motor still needs voltage to return the wipers back to the park position. A separate wire provides that voltage until it reaches the park position and then the switch breaks the connection.
It keeps power to the motor until the wipers come to the parked position then cuts power. This is the switch that is operated by a cam on the underside of the gear wheel. Also has low speed and high speed toggle. We use a lot of these in our halloween scares for our walk through haunted house. Off position will park the wipers. This is an easy 10 minute job to replace.
The part number for the wiper park switch that i found for my. Inside the wiper motor is a park switch. 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. Inside the motorgear assembly is an electronic circuit that senses when the wipers are in their down position. Check for continuity to ground at the terminal with the black wire. Wiper motor will continue to operate with switch in off position 1.
Gallery of Park Switch Wiper Motor
