I tried to hook up the Becker Ipod cable (BNA-CBL.MONO) to my '68 250 SL Becker TR.
It has 3 receptacles; none of which fit the cable.
There is a 7-prong receptacle (do i need this cable seen in 2nd photo or is that for cassette/sw radio)
Not sure if this is an early TR or 230 SL model radio.
I sent Becker an email.