Got a new heater motor installed and that fixed the heater issue other than the new heater switch I bought from Classic Parts fell apart so I had to use the internal switch parts to fix my old one.
I guess the old heater motor blew out between the removal or install or got too much metal dust in it from sanding the cab interior or something.
But the heater works as does all the rest of the electrical now with the new harness in place and new plug wires and all.
Did not have to smoke too much. Seems to only have had issues with the goop around the variable light switch. Everything else seems fine. Have to resolve some radio issue. It has power but no reception. I will try some tube swaps with my old radio.