I have a cd changer(A203 820 90 89) That I would like to put in my 2004 e-500.[hr] I found a couple of wires on the passenger side trunk, bu[hr] they don't fit the changer. Do I need a adapter wire, or is this a plug and play[hr] . Can anyone explain this install to me . Thanks alot TOM

 

this cd changer won't work in your car. you need one that goes indash right under the radio. you could probably install the 203 changer but you would have to run power wires and fiber optics to it in the trunk.

 

concur. model MC-3010 (matching your p/n) is for DB2 compliant models, 1999-2003