1969 Barracuda Fastback
3-speed windshield wiper switch:
My windshield wiper system (variable speed) is a construction site - that's what I have:
-two incorrect windshield wiper motors #3431905 and #379942
-2 correct wiper switches #2770378
-1 correct windshield motor arm (would fit on motor #379942)
-1missing spring washer
-some cut wires
-a wiper motor arm bushing which does not look like its right for variable speed system - but it fits the motor arm.
Today I started slowly to go through all the components. First, I reconnected the wires and tested the motors by following the procedure in the service manual. Good thing, both turn and also go back to the park position.
Second, I disassembled and restored one of the wiper switches. I used a fiberglass cleaning brush to clean all the contacts - this tool works best for me. It is important to wear latex gloves and don't get any fiber on the skin. Cleaned everything again, applied some contact spray and reassembled the unit. With patience and care, it's possible to bend the ears on the housing back and forth, without damaging the plastic cover or housing itself. Finally, I tested the unit with an ohmmeter - Et Viola!
Here is a great article - dodgedifferent2 explains it way better than the manual - thank you:
Testing a wiper motor
Some pictures:
3-speed windshield wiper switch:
My windshield wiper system (variable speed) is a construction site - that's what I have:
-two incorrect windshield wiper motors #3431905 and #379942
-2 correct wiper switches #2770378
-1 correct windshield motor arm (would fit on motor #379942)
-1missing spring washer
-some cut wires
-a wiper motor arm bushing which does not look like its right for variable speed system - but it fits the motor arm.
Today I started slowly to go through all the components. First, I reconnected the wires and tested the motors by following the procedure in the service manual. Good thing, both turn and also go back to the park position.
Second, I disassembled and restored one of the wiper switches. I used a fiberglass cleaning brush to clean all the contacts - this tool works best for me. It is important to wear latex gloves and don't get any fiber on the skin. Cleaned everything again, applied some contact spray and reassembled the unit. With patience and care, it's possible to bend the ears on the housing back and forth, without damaging the plastic cover or housing itself. Finally, I tested the unit with an ohmmeter - Et Viola!
Here is a great article - dodgedifferent2 explains it way better than the manual - thank you:
Testing a wiper motor
Some pictures: