ok, now i found aftermarket cable for the reverse camera
AUXILIARY INPUT/OUTPUT LEAD FOR BMW/RANGE ROVER/ROVER75 - eBay (item 300297284035 end time Mar-30-09 13:37:07 PDT)
but need to find a camera that will fit into my X like this
BMW E60/E90/E70/E71er Car Parking System Camera Newest - eBay (item 170289736740 end time Mar-26-09 02:26:44 PDT)

any idea?

__________________
2008 BMW X5 4.8i
Navigation
Bluetooth
Rear Entertainment
Aerodynamic kit
DVD, CD, TV
Projection