Residential Thermostat Wiring Color Code

What all those letters mean on your thermostat’s wiring Thermostat wiring diagram mean letters wire 2wire only where ifixit thermostats which goes

What All Those Letters Mean on Your Thermostat’s Wiring - iFixit

What All Those Letters Mean on Your Thermostat’s Wiring - iFixit

What All Those Letters Mean on Your Thermostat’s Wiring - iFixit

What All Those Letters Mean on Your Thermostat’s Wiring - iFixit