2 speed wiper motor with universal switch question?
I feel bad that I don't "know" these. The fact is, I've ever had "enough" to sit down and figure out how the variable/ or two/ or three speed setups work. The service manuals are somewhat lacking. And they are tricky, AND they changed designs
I'm learning more about the 2 & 3 speed, Del. I have a couple 3 speeds I can play with. You probably know more than I at this point.
My end goal for now is to come up with some way to run and park the motor from the dash without the factory switch.
What I think I know is, 3 speed-wise, the switch reverses polarity going to the motor causing it to run backwards until it parks.
In forward (dash switch on L,M,H) the islands and outer cam guide the rocker arm around the latch.
In reverse (dash switch off) the outer cam and longer island guides the rocker arm down into the latch which rotates the switch cam out to contact and open the park switch, stopping the motor.
As Johnny Mac confirms, it's fairly easy to mimic the forward part of this. How can we mimic what the switch tells the motor when it's time to park, is the answer.
That will be in the truth tables and wiring diagrams of the FSM, I think.
I know it would be easier to just buy all new or nos or rebuilt **** and be done with it. That's no fun...........
