My old thermostat on my heat pump and firmish has 7 wire on it greem,white, lue,orange,yellow,cold,red. I am trying to install a programmable thermostst, where does all the wires go?? I am lost thank you waiting your ans.

What is the brand and model of your old thermostat?
What is the brand and model of your new thermostat?
Since we are not mind readers how about telling us about your system.
Heat? Airconditioning? Heat pump? Brand and model?

There are also some general tips in the sticky notes at the beginning of this board.