Thanks Travis. Problem solved. With the resistor card plugged in to the wiring harness all legs did have continuity to ground. I could not get the plug to come off the resistor card. Looking carefully at the plug one of the wires had the insulation slightly melted and there was a tiny bit of green corrosion on the wire. It appears that one connection was bad and had burned it's self in to. There was no continuity from that wire to the resistor. When I jumpered from the wire to the resistor terminal all fan speeds work fine. Although the resistor card seems to be fine I can't get it off of the connector so I bought a new resistor card and ordered a new plug. Resistor $10 and plug $12.
As a band aid I crammed 2 pieces of .032" stainless steel safety in the bad terminal and all speeds work fine for now. Iths might keep working until Tuesday when the new plug is supposed to be here.
Thanks for the AC drain tip. There was no sign of that being a problem but I will check it anyway.