X3211..

Pin 1 - Blue
Pin 2 - Brown
Pin 3 - Yellow
Pin 4 - Brown

It'll be fun figuring out which brown is which - and it does matter. Hopefully the cut point is different on each brown wire and hey can be matched. Failing that, you might need to use a meter and trace each brown wire back to the connector on the A/C panel.

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)