I know this question has been asked a 1,000 times before but there still
doesn't seem to be a definitive answer!
I have a 2004 BMW M3 with a cassette head unit, 6 CD changer, Harman Kardon
speaker upgrade and Bluetooth mobile prep.
I am looking at buying an Alpine CDA-9855R head unit with Alpine KCA-420i
Ipod adapter but obviously I need more than these 2 items!
The seller on eBay said I also need:-
steering control bmw interface-Alpine
£70 for the lot (not stereo ;-))
But surely I'll need something else as it's Harman kardon equipped?
Any advice would be welcome!!