Have HVAC Questions? Ask an HVAC Expert for Answers
Herewith attached the wiring diagram for your model of thermostat. I assume that the wallplate is still connected?
Unfortunately not as simple as that as there is no standard connection ~ what you will have to do is using the circuit diagram sent track back each individual (or pair) of wires to the components they are connected to. Once you have marked them down you can then connect them to the thermostat wall box.