Lee,
Yes on 1 and 2.
Generally the fans are wired direct to the dash switch only. After smoking a couple of switches, I finally installed a relay to take the load, behind the dash somewhere around the back of the radio... When I put my new fans in, I also put one fan on a controller to automate it...where the second fan remains in manual mode.
I would think that any other wiring (the thermal switch) you have for the fans might be owner induced at some point.
Your mileage may vary....!
Steve
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