Hi all... Thanks in advance to any answers. Lookin to install a honeywell smart thermostat however the extra (c) wire (brown) is not hooked up to my existing dumb thermostat. Any idea where where i can make the connection in the attic unit to get it working. My thermostat wire is in the middle lighter brown color. Very much appreciate the help.
John C
John C
source https://hvac-talk.com/vbb/threads/2228527-Smart-thermostat?goto=newpost
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