This adaptor came out of my M3

The last 3 pictures show another unit in my other 3 series BMW

This will work with any business cd radio in a E46 chassis

The wire harness starts with plugs in the trunk where the optional cd changer would be located

This replaces the changer

Snake the wire to the glove box where you can plug in iPod or iPhone

This unit does not include white wire for iPhone 6

It is readily available, I would recommend Apple OEM

You can get instructions for preferred dip switch settings display on iPod or on cd radio

Controls work on steering wheel

To move from source i.e. Radio or CD from iPod use steering wheel control back or forward once then touch CD Radio as always.