I know it's supposed to turn off when you open the door after removing the key....but does anyone know which wire I should use to make it stay the eff on after all that? I'd like to leave my phone/tablet/other devices in the car charging while I run into the store or whatever, but am not able to do that in the sonic. Can't be that big of a drain to charge a low wattage item, the 2012 malibu that my work gave me has it's 12v port stay on all the time regardless. Just figured I'd ask in here before I actually started digging around with the multi-meter to try to figure it out. Thanks for any replies.