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 30 Amp Receptacle WiringHome Switchboard WiringAdding A Light To A 3 Way Switch240 Volt Light Wiring DiagramSeries Lighting Circuit Diagram3 Way Switch FunctionTrailer Hitch Power ConnectorWiring A Wall Plug Socket