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I bought a new thermostat that needs the c wire. Old thermostat wasnt using the blue c and was stuffed back in the wall. Come to find out the blue c wire is not connected to the furnace. Trying to connect the blue c wire to my furnace. As you can see all the wires are connect except the blue c which is wrapped at the bottom of the picture.

Machavity
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Chris G.
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  • Related, but probably not a duplicate: [Can I use the T terminal in my furnace as the C for a Wifi Thermostat?](https://diy.stackexchange.com/q/56049/33) – Tester101 Sep 18 '17 at 11:37

1 Answers1

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Found solution. Just connected C blue wire to the T terminal on the old furnace.

Chris G.
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