i had anissue with my stereo drawing constant pwer frm fuse 9,the stereo would not shut off or would turn on by itself,so i had to remove fuse 9 to reset radio and shut it off,these radios do really wierd things make sure you know for certain that the radio is not draining the battery,i had a dead battery a few times from just the display on the radio,you will need top do a draw test,to findout how many volts/amps are bei ng drained from battery,check the battery volts under a full load to make sure the alternator regulator is spiking up to 14 volts.that with all the power options on and running all lights radio windshield wiper ac blower fan,even rear defrost.you may need to upgrade to a 130 amp alt.