hello, new guy here, miniowner92 (i've a 1992 classic mini), , and most recently a 2004 aveo ls automatic. would like to pull on a little of your expertise; i have NO check engine light, malfunction indicator lamp, whatever you call it. doesn't illuminate as you key on, doesn't light when you have a malfunction, just doesn't work. could this bulb be burnt out? tried to 'ohm' it from the backside, but i think it's an led, and i've had no luck w/it. any other way to check it? would love to have it for its intended purpose. any help much appreciated. also, are the stereo code #'s anywhere else but the owners manual? it has long since been missing. thanx.