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Originally Posted by mross  So, with the furnace running, If I put a multy meter on the G and B terminals, I should get a reading of aprox. 24 volts, is that correct? |
Correct. "G" is hot when the fan is running, and C is common.
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| Does it matter which wire goes on the G or B terminal? |
No.
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| Why do you think it may not work? |
Y and G are "hot" when the A/C is running, and it may burn out the solenoid valve on the humidifier. But, you may be lucky, and no harm are done.