With my old Blaupunkt Los Angeles MP72 I now have the opportunity to enjoy an MP3 player or join SmartPhone to music.
The cable is plugged into the free slot of the changer. Done. Radio push into the slot, pressing twice on the CDC button and the input works. If you have connected a CD changer, the slot is occupied and the cable can not be connected. Look at your radio before once from behind.
Otherwise, the cable for the price is very valuable.