Hi PDC7391,
Thanks for posting here in the Community forum and for showing interest in our Nest Thermostats. Fortunately, your thermostat wires are compatible with any of our Nest Thermostat and should be wired to the Nest Thermostat base as follows:
- Red wire to R or RC/RH
- White wire to W or W1
- Yellow wire to Y or Y1
- Green to G
Also, here's a guide for the installation and setup of a Nest Thermostat.
Let us know if you have any other questions.
Best,
Zoe
