Standard Thermostat Wiring Colors

Can't figure this 3 wire system out or find anything in postal about it Thermostat wiring wire color diagram code decoded fridge Thermostat wiring wire heat color diagram pump air nest guide common goodman colors honeywell code labels heater aruf handler wires

Fridge Thermostat Wiring 4 6 3 - lasmanualidaddesdeesther

Fridge thermostat wiring 4 6 3

Fridge Thermostat Wiring 4 6 3 - lasmanualidaddesdeesther

Can't figure this 3 wire system out or find anything in postal about it