I have a 2001 X5 prewired for a phone with adapter underneath armrest, 16:9 screen and MK4 NAV.
$650 is a little high for me right now for a BT kit, and my question is, what parts/units do I need to install BT in my car?
I need the ULF module, Ebay has it, how about anenna? Anything else?

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