enter image description here

Got a new Honeywell WiFi thermostat and need to add a common. Currently the 3 common wires per the diagram (BL, BK, GY) are wired to one side of the AC Unit. Is there an issue if I piggy back a common off those wires (add a new wire to the wire nutted bundle).



Go for it man

That's precisely the right move in your case -- that's where the system wiring diagram expects you to tap your C wire at.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.