You have 190-E yr 1990. How to find the code for the radio?

What does you owner's manual say? Try http://www.carradio.sk/ which has a huge database of car radiOS. Mike. Did they even make a 1990 190e? Wasn't it stoped in '88 and re-introduced in '91-'92? 1993 was the last year for the 190E You will need to contact the dealer for the radio code