This is the third wiper motor replacement, trying to make it work. Can someone explain what the wiring diagram and voltage should be at the motor when the switch is operated?
My motor currently runs in high speed in both positions. Then when I turn the switch off, the motor lets the blades jump and won't park itself. If I knew what the voltage and ground situation should be at the motor, I can possibly figure this out. I just replaced the switch as well. Thanks

Found the problem!!! The switch needed grounding! Apparently someone had removed a ground to the switch itself. Everything works as it should now.

Found the problem!!! The switch needed grounding! Apparently someone had removed a ground to the switch itself.

Missing ground will do it.