I just bought a Honeywell model # RTH110B to replace an old thermostat. My problem is, I have 5 wires (white, yellow, green, blue, and red). The honey well does not have a label for blue. Where does the blue wire go?

Does it have a spot labeled ,C, if not the blue isn`t necessary, the blue/common is to take away the need for a battery

This is in normal cases providing the wireing was done by rule of thumb

The only "C" it has is next to the R. Rc and Rh. If the Blue goes with the Rc, then I don't need the wire linking Rh and Rc? Says I don't need it for a 5 wire hook up.

The only "C" it has is next to the R. Rc and Rh. If the Blue goes with the Rc, then I don't need the wire linking Rh and Rc? Says I don't need it for a 5 wire hook up.

Hook up your w-r-y-g,, with jumper,, tape up and tuck away the blue not to be needed