Hi all this is my first post here and I'm after a bit of advise. I have a 2005 BMW E60 with the standard CD player and 6 disc auto changer in the glove box. What i really want is the CCC nav, I've seen a few for sale on ebay but before purchase i need some advice on installation. Will the CCC unit just be a simple straight forward swap or will i need to splice wires and programme? Any advice on this will be much appreciated.