Nest wire instillation

[Jeannesutter]

I am going  to install this Nest Learning thermostat myself. Turned  off power and took pictures. In llooking at wires only three are connected( white,green and red) leaving the blue and yellow loose and not connected.do i copy what is seen?

[MrRongoose]

Your best bet is to use https://store.google.com/us/widget/compatibility/thermostat?hl=en-US&GoogleNest
You can also start by copying what you have and the app should prompt you. The other two wires may or may not be needed. I used the extra wire on mine to provide the common for power

[Jeannesutter]

Thank You.

[Jeff]

Hi, everyone. 
In an effort to keep content fresh on the forums here and prioritize current issues, I'm going to go ahead and close up this thread. If you have any outstanding issues from this post or any other problems, please feel free to open up a new discussion.
Thanks,
- Jeff