Thanks for your answer, Patrick_Caezza.
Tina12, I'm chiming in to check if everything is covered here. As was mentioned above, your system as indicated on the wire labels is not compatible with our Nest thermostats. You may check this link for more information: https://bit.ly/2KOTqgW
We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.