The wiring diagram for the Furrion Chill Cube Ducted Single Zone Wall Thermostat Model FACW13VSDA-BL is available to help you correctly connect both the AC unit and the gas furnace using the adapter kit cable. The four wires in the adapter cable correspond to specific functions, and proper connection is essential for furnace control. While the label on the cable helps with AC wiring, the furnace requires additional wiring as outlined in the diagram. For detailed installation guidance and any technical support, you can also contact Furrion's customer support team directly. If you need further assistance, Elkhart RV Parts is available to help ensure your thermostat controls both heating and cooling effectively.