Originally Posted by iBeech
The Infamous BMW Y Cable
How can i buy one?
You should only buy one from your BMW dealer, or if you are 100% sure you are buying an original from eBay or Amazon or similar. This is due to BMW's fantastic idea to put a chip in the split on the cable, ensuring that it will only work properly with an OEM cable.
I got 12.5% discount on the item, which resulted in it costing me £37. Make sure you ask nicely
I asked nicely and my dealer gave me one for free.