How to connect UNLABELED wires white,yellow, red, blue,green,orange, brownto terminal Y,R,G,W Also which turns system OFF AS THE POWER IS STILL ON AND MY OLD THERMASTAT IS TOAST The new is Honeywell CT31 Please help!

Do you have a heatpump? If so and all the wires you have. Odds are you have the wrong stat. you need a 2 heat stat. Power will turn off at the indoor blower unit.