Craig, I just joined as well and I'm having the same issues with my 1968 Wildcat. I have 2 rotary switches with one that should trigger the fan among other things (and sometimes does). I don't have a fan switch and all the many systems in the factory manual, seem to have a fan switch. Mine's an Alberta car and If your car was also sold in Canada, perhaps we got the econo A/c Heat version. If I find out anything I will let you know.
Gary '68 Wildcat