Wiring for Google Thermostat

[tonyrosadoabx66]

My old thermostat is a Honeywell Model TH6210U2001 and it had five wires connected to it: Red, Green, Yellow, White and a Blue wire connected to the W2 (Aux) terminal. In installing the Google Thermostat I can connect the first four wires correctly but I cannot find which one of the available empty terminals to attach it to: C or *OB. Do I need to connect this Blue (W2 (Aux) to one of the two empty terminals?

[Patrick_Caezza]

Post a picture showing the wiring of the original thermostat.

[tonyrosadoabx66]

Where should I post the image? Tried to put it in a reply but the email bounced back. Tried to paste it here but it says I am not authorized to post pictures. Any email I can send it as an attachment? The blue wire is connected to the W2 slot in my Honeywell thermostat. 

[Markjosephp]

Hello there,

I wanted to stop by and see how I could help.

Thanks for assisting here, @Patrick_Caezza.

@tonyrosadoabx66, I appreciate your effort. To attach a photo of your thermostat's wiring. You can go to your Google Nest Community page's account so you can reply directly to the post and select the camera or photo icon to upload. Also, please tell us the make and model of your HVAC system so we can double check its compatibility with the Nest Thermostats.

I'll look forward to your response.

Regards,

Mark

[Jenelyn_O]

Hi tonyrosadoabx66,

I wanted to follow up and see 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 @Patrick_Caezza and @Markjosephp for your help.

Best,

Jenelyn

[Jenelyn_O]

Hi tonyrosadoabx66,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this thread in 24 hours.

Best,

Jenelyn