I have a F500BT that is hardwired and as far as I can tell, should turn on and off just like any aftermarket headunit would. The yellow wire is a constand 12v and the 5v input is connected to a switched 12v source. With the unit powered up and in use I really have no issues, but when I shut the ignition off, sometimes it will come back on and resume itself as it was before being turned off but other times it goes through the complete system startup like it does after being powered down manually.
Is this a common problem or is there something wrong with my unit? If it is a know issue, is it