So the batteries were totally drained (1.5 volts on the meter) yesterday morning. Charged em up and low and behold, the cabin vent motor runs without the key in the ignition! Turns off when the mode selector is "off", but runs (according to the speed selected 1,2,3,4) when it is in any other position. Really odd and I am thinking it is some relay in the system. Does anyone have any ideas? I googled about a dozen things and nothing worth a hoot comes up. Thanks for your help fellas!