Connect Power and Thermostat Wires on the CM. Connect the power and common wires to the two terminals on the left side of the opening. Terminals for Cool, Fan, and Heat are located along the bottom of the opening. Each block has three terminals. From left to right, these are Power (internally connected – generally not used), Stage 1, and Stage 2. Connect the thermostat wires to their respective terminals.
Connect the Wall Sensor using the provided white harness. Connect one end of the gray RTS cable to the port on the right side of the opening and connect the other to the back of the Wall Sensor