From G.R.: "Any ideas on what to check or why just those two components aren't working...all my other electricals are working, headlights, tailights, hi/lo beams. park lights, turnsignals, engine starts...just no heat/AC blower or engine electrical fan."

Everything you listed other than the Heat/AC is on a different segment on your switch. If you have a radio in your car that is wired to turn on when you run the car, it will likely act the same way as the heat/ac function as it is wired to the accessories side of the ignition switch. So yes, suspecting the switch was a good call on your part. The bad part is that your radiator fans are also wired to the same circuit and thus the overheat problem.

While it can be an adjustment problem, it can even be more suspect that it is going bad by making contact only part of the time. I rationalize this because I suspect the amperage draw to run your A/C and the Rad fans may be causing the switch failure. I typically like to see the Rad fans run via a relay which lowers the amperage at the switch which in turn provides a longer life.

Jerome