that would make sense that the yellow green wire goes to the easy start. Wonder why I have an extra black/white wire in the harness. I know the previous owner tried installing an easy start and fried the ecu. Not sure how, maybe the wires in the wrong position on the switch is the culprit. Usually on an ignition switch the center prong is the main and as you turn the switch it connects the others, so it makes sense yours is correct.