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I have only 2 wires. Black and white. I will try to wire it to the Rc terminal on the thermo, they are jumpered right now.

I have nothing going to green on thermo or furnace. I thought if I...

I tried the "jumper from R to G" but had no luck. I have the same situation as above. Is there anything else I can try? I have a switch on the furnace to turn it on, programmable thermo with 2...