Near learning wiring

[FamilyCarRental]

Need help with this one and where to place the “B” wire. 

I have a picture of the wires 

[zoeuvre]

Hi FamilyCarRental, 

Thanks for posting. Usually, the B wire from your previous thermostat should go to the C terminal of the Nest Thermostat. However, could you send us a photo of your previous thermostat wiring configuration so we can take a closer look at its compatibility with our Nest Thermostat?

Keep us posted. 

Best,

Zoe