This is the set of wiring adapters and bluetooth antenna you need to install the new Hard Disk based COMAND NTG2.5 into an older Mercedes SLK (R171) which has the Audio-50-APS or DVD based COMAND-APS for cars WITHOUT an existing phone system.
It is not suitable for cars with Harmon Kardon sound system
It is not suitable for cars with Harmon Kardon sound system