Wiper motor acting funny
 

Hello all,

The wipers in my 1990 300SL started doing something wierd:

-Works fine on HIGH speed setting
-Doesn't work at all on LOW or INTermittent setting

This happened all at once and acts this way all the time now (it is not an intermittent problem).

I read somewhere that the wiper motor had two "windings" inside it: one used for low/intermittent and one for high. Sounds to me like my motor is 1/2 baked.

Is this true? I'm guessing it's not the following by process of elimination:

-Combination switch - since two positions wouldn't go bad on it at once
-Relay - that only affects the INT position and not the LOW setting.

Are my assumptions correct? I still plan to test out the wiper motor if I possibly can (see if I can run 12V to the right wires to run it on LOW/INT/HIGH to see if all positions work or not).

Any reason I should suspect anything OTHER than the wiper motor itself??

Thanks!
Neal