Thermostat Wiring Diagrams December 15, 2018 Heat Pump Thermostat Wiring Diagram. Learn the color codes of a typical heat pump thermostat Wiring in your house. Always OFF the mains before attempting to change your own thermostat. www.airconditioning-systems.com Window Type Aircon Wiring Diagram4 Switches One LightHow To Install Outlet BoxDual Control Light Switch4 Wire Dryer HookupSix Prong Trailer WiringA Neutral Wire ColorBasic Telephone Wiring Diagram