(W54, W55) (Coupe: Radio, Rear Tweeter and Midrange Speakers)

Radio/Audio System Schematics: W54,W55 (Coupe: Radio, Rear Tweeter And Midrange Speakers):

"For the description of the RPO Code(s) shown in this article or any of the images therein, refer to the RPO Code List found at Vehicle/Application and ID" RPO Codes