My old therostat was a two wire round honeywell mercury one. I have installed a honeywell rth7600 and want to make sure the wiring is correct. Any suggestions on where the two wires connect to the new thermostat?

Use W and R treminals.


http://customer.honeywell.com/techlit/pdf/PackedLit/69-2206EF.pdf

Make sure you do the setups as required in the manual for your type of unit etc.