0491149 126411 Adapter cable MP: Notes
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
(Adapter cable with diode) For reverse polarity protected connection to a 12 volt-voltage source Engine: M50, M52, S62, S54. Only available as part of complete tool set 12 6 410 - (83 30 0 491 148).