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Thread: RTH6580WF with C Wire From 24v Adapter

  1. #7
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    I could have the wire colors corrected, it was a little mind boggling when I saw the reversed order.

    After the change, we would have the green wire as G and yellow wire as Y. So the green wire (G) will goto the C terminal in the thermostat and attic transformer. While the left over red wire that connected with G will connect to the yellow wire (Y) and blue.

    How does that sound?

  2. #8
    Senior Member

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    Sounds right. Note C from the thermostat would connect to the transformer terminal that has the blue wire on it.

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