1969 Wiper Motor Question

[t6dpilot]

Hello all. I posted this on Pelican with no responses and thought I would try here. I am trying to wake my wiper motor after a lengthy slumber.

I just removed my wiper motor to test its operation. Hooked up the correct power wires and only got the motor to run in the second (middle) speed selection. As you know, there are five - red (power), brown (ground), and black/yellow (speed 1), blue (speed 2), and black/violet (speed 3). Yes, all the correct wires have the proper voltage to them when the wiper stalk is in low, medium, and high speeds. I also tested it straight off of a power wire and got the same results.

If I interpreted the wiring diagram correctly, the wiper motor speeds are controlled through built in resistors in the motor. If the motor works on one speed (the middle one), then the motor itself should be fine (I do have an electrical industry background). The only thing that I can think of that would cause it not to work in the other two speeds is a faulty resistor or an open connection between the spade connector and the motor winding (resistor?).

Does anyone out there have any experience with this specific situation that could give me some guidance? I would prefer using this motor versus looking for a used (or new ) one. Your help is appreciated. Thanks.

[t6dpilot]

Bump for some love, my early 911 brothers.

[Grady Clay]

Scott,

http://forums.pelicanparts.com/showt...13#post3095213

Pelican 69 Wiper Motor Question.

Sorry I didn't see your Pelican post.

Best,
Grady