Well, I pulled the blower motor out yesterday (3 screws under the pass side dash) and when it was out I could see the resistor card through the hole where the blower motor goes... It was obviously at least PARTIALLY burned out, since it looked like 1/2 the card was blackened and charred... That was the easy part though. Looks like the card is held into the blower assy on a plastic cover (that the blower wires feed through) that is screwed onto the blower assy by three 7/32 screws from the bottom. I can see 2, I can actually remove 1, another is visible but impossible to remove except maybe with a 7/32 open end wrench, but the third I can only feel with the tip of my pinkie, and I don't know WHAT I could use to get it out... I am thinking perhaps I can braze a 7/32 shorty 1/4" drive socket onto the end of a flexcable wrench... I don't know really, perhaps I'll try it when I find the tools. For now I decided to live with speeds 3-5.
Thanks,
Tom