I am restoring a 1969
Sovereign.I have gutted most of the inside. I am going to replace the Ac with a new Dometic or Coleman. Currently I left the four wires from the AC unit to the thermostat. If I add a heat pump unit and a digital thermostat how many wires do I need between the two components. Do I need a
12 volt circuit added in the area to run a digital thermostat. Do I need to pull new eight conductor residential thermostat wire. Do I need to locate a
12 volt circuit overhead? Thanks for some help.