Hi mmarti12,
Thank you for taking the time to let us know about your inquiry.
I'd be happy to take a look at this for you. Send us a picture of your wiring diagram. You can get it from your current thermostat or from your HVAC control board.
You can also go to this link for Nest thermostat compatibility to make sure that your system is compatible with the Nest Thermostat.
Let me know if you have other questions.
Cheers,
Renz
