Hi BGC,
Thanks for reaching out to the Google Nest Community Forum. I understand you have some questions about connecting your wiring system to a new thermostat. No worries, it’s a pleasure to assist you.
Regarding the wiring configuration, most of the wires are compatible with our thermostats; however, for the most accurate information and to ensure your safety and the proper functioning of your equipment, I recommend consulting a qualified technician. They can provide professional assistance tailored to your specific situation. For additional information, review this helpful article: Identify a thermostat wire.
If you have more questions, please feel free to write in this forum.
Best regards,
Daniel
