Thank you for the information. I was aware the light was in the headliner but the visor has some electrical contacts in it to make it work. The picture you posted along with the illustration on RealOEM makes it very clear now. Thank you again.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim