I'd like to be able to crank the stereo with the doors open when I'm parked, on occassion. I read in the owner's manual how to keep the doors open without having the overhead lights on, but I can't find out how to turn off the annoying "Ding, Ding, Ding"... I don't wanna do anything that's not reversable... Just wanna unplug that darn thing. Can you guys point me in the right direction how to find it & disconnect it ? Thanks !