I have 3 wires Red Black and white. it looks like no C wire. The unit
was built in 2022 and the air conditioning system is a GENERAL. Can I
install a NEST thermostat.
Thank you, the unit is a General ACG 45 UiA-LM unit. How and where do I
connect the 24 V source wire from and to?? When you say wiring harness
what does that mean? Sorry first time doing this and this is the best
answer I have received, I have been a...