Wiper motor surgery, 91 200!

[Huw Powell]

> Just took apart a spare wiper muter assy to see if I could figure out the
> park mechanism.

> Only thing I can figure is that the contacts (tensioned against metal plate)
> lost tension, bent them to provide better contact/tension. The metal plate
> has a piece of plastic on one portion, thinking this breaks continuity and
> parks the wipers.

I think you are right, based on my reading of the manual for my ole 
chebby truck (!).  What happens is during the "swipe," the circuit is 
maintained through a moving part in the wiper mechanism.  If the switch 
is turned "off," when the mechanism hits that plastic part, ie, no 
contact, there is no power and the motor stops.  If the switch is still 
"on," power is still there to keep the motor moving.

In other words, that contact acts as a switch in parallel with the 
switch inside the car.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/