![The blue wire goes to the Y on thermostat. Instead of going to Y on HVAC it is connected to white wire that goes to AC? Why and do I connect both ( The blue wire goes to the Y on thermostat. Instead of going to Y on HVAC it is connected to white wire that goes to AC? Why and do I connect both (](https://preview.redd.it/bsrz9bxlmk961.jpg?width=640&crop=smart&auto=webp&s=1deee0efb5bbc3653ea2f3c0203c6d5e8da5196e)
The blue wire goes to the Y on thermostat. Instead of going to Y on HVAC it is connected to white wire that goes to AC? Why and do I connect both (
![Blue "C" wire is connected to "Y" on old thermostat. New thermostat has separate "C" hookup. Where does the blue wire go - "Y" or "C"? : r/Nest Blue "C" wire is connected to "Y" on old thermostat. New thermostat has separate "C" hookup. Where does the blue wire go - "Y" or "C"? : r/Nest](https://i.imgur.com/qa9UXyW.jpg)
Blue "C" wire is connected to "Y" on old thermostat. New thermostat has separate "C" hookup. Where does the blue wire go - "Y" or "C"? : r/Nest
![Amazon.com: C Wire Accessory Common Wire Kit for Most 24 VAC Thermostats (4 to 5 Wires), White (1 Pack) : Tools & Home Improvement Amazon.com: C Wire Accessory Common Wire Kit for Most 24 VAC Thermostats (4 to 5 Wires), White (1 Pack) : Tools & Home Improvement](https://m.media-amazon.com/images/I/71XSABB637L.jpg)