Here's the ?grasp? that I have on this wiper wiring so far.

1. The switch should be served with a fused hot wire when the ignition is on.
2. There should be two wires coming from the switch to the motor (one for low speed and one for high speed)
3. The wiper motor is grounded by "it's" mounting bolts and ?I think? the switch is also but it could possibly require a separate ground wire.

Am I even close?