97 e420 cd changer problems
 

okay, this should've been easy - got a secondhand Alpine 6 disc changer with adapter to fit trunk plug in - installed everything and all I get from the radio display is either "no cartridge" (obviously, if there is no cartridge in changer when I hit CD on deck) and if there is a cartridge in changer it simply reads "cd error" - the deck is obviously recognizing that I have a changer connected but the changer doesn't seem to be getting any power - suggestions??

thx much

specfically what alpine cd changer and what make and model adapter or do you have a pic of it?