How To Wire My Thermostat December 31, 2018 Wiring . diy.stackexchange.comHeat only 2. This article applies to the ecobee3, ecobee3 lite, and ecobee4 ecobee thermostats require a C (common) wire to power on. If you only... support.ecobee.com Connect Speaker Wire To ComputerHow To Add A Cable Outlet To A RoomHouse Wiring ConnectionTypes Of 3 Way SwitchesThree Prong To Four Prong AdapterHouse Electrical Wiring TroubleshootingWiring Diagram Lights In Series230v Relay Wiring Diagram