I want to go from this Sears Weathertron :

http://home.windstream.net/eof/IMG_8489.JPG


To this Emerson Model 7903:
http://home.windstream.net/eof/IMG_8492.JPG

Is this possible?
and if it is can someone point out where the wires go from the old to the new?

here's what I'm thinking:
R should go to:do not use
T should go to: do not use
O should go to: Rh-Rc jumped
G should go to: G
Y should go to: Y
X2 should go to: do not use
B should go to: do not use
W should go to: W

Probably got it all wrong, Probably not even compatible thermostats, I've already called any/everyone I can without paying for it, no info available. Let the flames begin... ;0)

Yeah yeah I'm going to check the inside and outside model numbers now... sheesh

They are not compatible. Sorry.

It appears that you have a heat pump. The Emerson does NOT have the capability to control the reversing valve and the emergency (most likely electric) heat.

Of course, if you REALLY want that thermostat, replace your system with something that will be compatible. What! This is America! You can if you want... :rolleyes: