CJT wrote:

lodingi wrote:

no there isn't a jumper. the old thermostat has five wires.

RH, G, Y, W, RC

the color of the wires are red, green, yellow, white & orange.

So the ARE color coded? You could hope whoever did the installation
followed conventions.

I've used this to advantage in the past:

http://toad.net/~jsmeenen/wiring.html

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