You guys don't get humid days where you need the defrost? I don't think I would eliminate all air in the cab.
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You guys don't get humid days where you need the defrost? I don't think I would eliminate all air in the cab.
NOrmally it is on the firewall right next to the head on the RH side.
Moe, If you look at the last picture in post #4, you will see the heater control valve on the firewall between the valve cover and the master cylinder. Hope that helps, as far as running your wires, I would run them in one of the plastic sheaths and run them first, then the insulation, then the carpet.
It should connect via cable to the interior climate control, specifically to the slider that controls the temp range from cold to hot. Pic does not show much but might help.