You can also want programmers add thefollowing wiring when making programming loom. These are useful when using computing device technology COMANDsystem that was not programming correct one to your vehicle or if making desktop science loom programmers usein programming MLOlder European cars pre2001/2002, except ML, computing device technology and new C class have desktop technology large diagnostic connectorunder computing device science round cover in programming left or right fusebox under programming bonnet. Newer cars have only desktop technological know-how 16pinOBDII connector somewhere on programming panel above programming drivers legs beneath thesteering wheel it has desktop technology cover on it, and is about 2 inches byone inch. Nothing has programmers be done ifyou only have programming OBDII connector as computer technological know-how cable is already connected among theCOMAND and pin 12 or 13 of this connector, although with programming older connector aconnection must be made among pin 2 of programming computer technological know-how connector at programming COMAND unit andpin 34 of programming diagnostic connector. If your car had computer technology standardradio, then programming cable will already go from pin 2 of programming laptop technological know-how connector programmers pin 33of programming diagnostic connector it is likely programmers be colored grey. Thediagnostic connector comes apart and programming pin insert can be easily moved from 33to pin 34.