[kebauc]

I keep getting the ground as a suggested problem. Let me put that one to bed for good.

I can run jumper directly from the battery to the motor. By jumping the motor ground to the motor connector ground, I get the motor to turn.

Also the resistance from the motor connector ground to battery ground, comes in well under 1 ohm (on the order of .1).

The diagram is real nice. Do you have a wiring diagram for the HVAC?