I have a 1994 Mobile home that has a Coleman Evcon Presidental ac/heating unit. The thermostat is the same brand (manual). I would like to replace the manual thermostat with a digital Hunter "Just Right" Model 42995b Thermostat, if that is possible. The problem is how to hook it up. My system has 1 rocker button that you switch to heat when you want to use the heater and cool when you want to use the AC. It also has another rocker button for Auto and Continuous. My manual thermostat is only hooked up with two wires. A red one and a white one. There are other colored wires (blue, yellow, green and one other color that I can't remember) that are also present, but they are not hooked to the thermostat in any way, they are just folded down. How do you hook this to the digital thermostat which has a red wire that is folded like the loop in shoe string (one end is attached the Rh screw and the other is hooked to another letter screw that I can't remember). So what do you do with the red and white wire from my old thermostat. Do I use the other colored wires I mentioned earlier with the new digital thermostat or can I just hook it up with the red and white wire.