Trane thermostat had 2 red wires attached to RC, can only for 1 red wire in nest

[Fc2]

Have 2 wires going to RC and 2 wires going to W1 and C. 

can only fit one wire in nest

[Jenelyn_O]

Hi Fc2,

Thanks for reaching out. I'd love to know more about it. Could you please share the photo of the wires connected to your old thermostat and to your control board? Also, what type of Nest Thermostat do you have? You can visit this link to check what type of thermostat you have. 

Best,

Jenelyn

[Jenelyn_O]

Hi there,

I wanted to follow up if you still need help. Please let me know if you’re still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,

Jenelyn

[Jenelyn_O]

Hello there,

We haven't heard from you in a while so we'll be locking this thread if there is no update within 24 hours. If you need assistance or want to discuss topics, feel free to start a new thread.

Thanks,
Jenelyn