Wiring my nest thermostat.

[Mitch]

I have one red wire that had no jumper. Which location on the nest do I use, the RC or the RH?

I also hace one BLUE wire and one BROWN wire. I only have one location on the nest labeled OB. What do I do?

[Paul5]

Id get an electrican to fit it!

[JohnD]

The docs say either will work and no jumper needed.