That is correct Dinki, the wires you have are the same ones I had. On one of my tstats I used a transformer to power it. Plugged in the transformer, split the cable and connected one to the C terminal and one to Rh (Since you have an RC wire you will want to use Rh as well, they should be connected via a jumper) and on the other one I got into the attic, opened up my unit and found the terminal where the wires go. I just used a piece of 18/4 and cut back all but one of the wires, connected it to the C terminal then fed it down to my tstat.
Working like a champ.
Working like a champ.
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