An option you might want to consider. I have had the mediabridge with Sirius for several years. I did the install. I don't know about now but I have the 6 disc CD changer in the back and the install eliminates the capability to play CDs and the wiring ran from there to the radio.

https://www.youtube.com/watch?v=zMok2y05jNE

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas