Switch question for rear defroster

65 Dartman said

The factory map light switch is just as you described - off or on. I was under the impression that the rear defogger was a 2 speed unit, so the switch would be off, on1 and on 2. I have a couple of rotary rear defogger switches I'm using in my 47 Dodge project and they are set up the same way as your defogger switch - off, on 1 and on 2

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Thank you 65 Dartman. You are right on track. The system I’ve cooled together for this 66 Barracuda (SN: the holy grail of options for 66 barracudas) is only single speed unless you have the resistor. On my 72 Demon the resistor is part of the blower motor. On a Barracuda I have the wrong switch or the 2nd speed is not used. Gonna make it single speed.