I just bought a Honey Well RTH 230B thermostat. I lost the labels on the wires when I tried to pull them through. How do I know what goes where? How do I insert them into the thermostat?

You go on Google

And write this

Honey Well RTH 230B

Google say "Did you mean: HoneyWell RTH230B "

You click on HoneyWell RTH230B

And then, the first item is the one you need. It is even a PDF file.

http://www.silverbowproperties.com/instructions/honeywell-RTH230B.pdf


In other words, the answer is:
http://www.silverbowproperties.com/instructions/honeywell-RTH230B.pdf