I am not familiar with the Digital version Coleman Mac (although I thought they were drop in compatible with the Analog version.....but I don't know that for sure). Years ago I replaced our ACE 30.1 Analog Coleman Mac with a Hunter Digital thermostat which runs on two AA batteries instead of the 12vdc coach batteries......see my attached wiring diagram related to my conversion. On the digital (right) side of the diagram I wired the thermostat so its wire colors matched the coach wiring colors so it would be easier to reconnect if Ihad to replace the Hunter in the future. Check to make sure you have the wires on the correct terminals. The thermostat terminal designations should be similar over the years I would think and should be similar in your situation.....famous last words. I hope this helps you a little.
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