I have read for hours, and tried figure this out myself, but I need help. I'm trying to connect the Blue C wire from the tstat, without a C terminal at the furnace.
From what I have read, it seems to me that I would connect the C wire from the thermostat, to one of the 3 BL wires coming from the 24v transformer. If that is correct, I am still not sure which of the 3 BL wires to use.
Thanks in advance for any assistance!