i have a stock bose head unit and was wondering if the back plug underneath the gm plug is for a cd changer if so where could i find that adapter. my cd player on the bose unit went out on me, so i installed a panasonic head unit only to find that i have to bypass the bose amps that are hooked up to each speaker. so i bought the adapter that goes between the head unit and the gm harness for $60, and of course it doesn't work. so now i have a bose head unit w/ only radio and a panasonic cd player i can't use. if all else fails does anyone have a stock bose cd player for a 95 z28 or any lt1. thanks, mike.