OK - the Honeywell page had a wizard that said basically to go by wire
color after all... so I did and it worked. First (albeit minor) home
repair project complete. Huzzah!

Thanks everyone for your help and suggestions.

- Chris


DrMega wrote:
Hey everyone. I've purchased a Honeywell digital programmable (5-1-1)
and I am totally lost with the wiring. My old mercury t-stat had only
two wires, a red and a white, with no labeling on the wires or the wall
plate. The new one has a bunch of lettered wire spots (W, C, RC, Y,
etc.) and they say in the manual not to choose based on wire color -
but I have nothing else to go on.

Help please!