Tom,

Thanks for the info, but apparently I am not being clear enough with my question. I don't think the install is too much of a problem, as it is mostly 'insert tab A into slot B" type stuff. The question that I have is-Is it possible to purchase the 'other' parts in a BT kit to allow me to incorporate what I have into an X5? Can I get away with not having to purchase a whole new kit? Can I avoid having to put in a new piece into the armrest by just syncing my phone with my existing button and then reassembling things? -OR- Is the 'retrofit kit' that is pictured on the page that you referenced me to actually what I have PLUS an installation kit? If so, I will just purchase the install kit and go.