hey Mark, welcome to the fray!
can't tell ya just where it mounts as I haven't had a 60's model in awhile, but the controls should have a slider type switch
like such and the seperate resistor looks
like here - I'd bet that there'll be about 4 wires off the switch - 1 to power, 2 to the resistor, 1 to the motor - the resistor would then have 1 to the motor - switch would have off, lo, med, high with the lo and med going thru 1/2 or all of the resistor - no idea where it would mount, but I'd think maybe inside the heater case
Bill
