Plus AND Minus 12v from AC to Thermostat
I have a Dometic A/C and a Dometic single zone thermostat. The thermostat requires plus AND minus 12 volts. The schematic of the A/C control box indicates that the plus AND minus 12v come from the pow...
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The pic I have posted shows the external plus and minus 12v into this unit and same outgoing to thermstat. I suspect that schematic may be incorrect. It may be that this control unit generates the minus 12 volts for the thermostat. I will try to post pic of thermostat wiring.
