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| Q | | I have 5 wires and 4 of them connect to the old thermostat. Where do I connect the other wire, to the C?
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| A | | Only re-connect the wires that were connected to the old thermostat. Do not connect any other wires as you do not know where or if they are connected in the furnace. Do not connect the extra wire to the C or any other terminal.
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