I was helping a friend set up his Thermostat, but his new setup has some peculiarities. I recognize that the red being split from RH and RC can map to R, but the yellow threw me for a loop. There were two yellow wires, one regular and one with a contact terminal. Is that compatible? How does one place these if so?
I guess I should have been clearer, this was taken after I had already taken the white and first yellow wire off. The second yellow wire was still attached and I hadn't seen this in my own home or my other friend's places before when I helped install it. I never had a double wire before.
Thanks for reaching out here in the Google Nest Community.
I'd like to jump in here and check on how your Nest Thermostat is doing. I hope that you were able to get those wire connected to the system and works fine.
Let us know how it goes by replying to this thread.
I did not know which of the yellow wires to connect? The one had a connector end with a bolt through it, and the other was wrapped around the same bolt. I couldn't fit the connector end into the terminal, so instead of gambling with it, I figured I'd post a question. This was on a friend's set up so I just reinstalled the original unit until I got some clarity on this.