ok thanks all!!!!!! even if there is a magazine in the changer or not my 2007 head unit acts as there is and gives no error.... codes but acts as if there is cd 1 playing or cd2 ect ect!!!!!!! also cannot eject magazine!!! seems as if i have lost power!!!!to the changer!!!!!! but if this was so how can head unit act as if cds are playing!!!!!!!! any ideas now!!!!!!! :(