Aux Wire Wiring Diagram. Heat Pump Thermostat Wiring Chart Diagram - HVAC - The following graphics are meant as a guide only. Additional articles on this site concerning thermostats and wiring can help you solve your problem or correctly wire a new thermostat.
Next connect your audio wire to the 32-pin connector. When installing an ecobee thermostat any unnecessary or spare wires can be safely taped off or wrapped around the wiring bundle and tucked back into the wall. The trailer wiring diagram shows this wire going to all the lights and brakes.
The 4 wire aux cables have another wire for microphone.
Those 4 wire aux have TRRS male 35mmie4 terminals. W2 AUX and or E Emergency wiring connections will normally connect to the ecobee3 W1 terminal. Independent Control Auxiliary Lamp Wire Harness Kit Instructions. Remember watts and amps when using this method.