Date registered: Jul 2004
Vehicle: 1991 500SEC 38,800 mi. 1987 560SEC Now 145K mi. (Spring 2017)
Location: Boston, MA area
Mentioned: 0 Post(s)
Quoted: 164 Post(s)
RE: Mercedes Becker Radio Model 780 - 1480
I should think if the plug connectors are the same from the early one to the latter, plug it in & turn it on.
A year ago I installed a later Becker to replace my ailing Grand Prix Model 754. The connectors were identical and it was 'plug & play'.
here's a link for Becker connection decoder...