I suppose this question is probably a repeat but I need information please. I have just had a 2006 407 sw se and the screen is mono so do I have bluetooth system since there is a button marked tel which does nothing. I have tried searching for a bluetooth connection and I can only assume its either broke or not installed, so are factory bits available to enable it or can I fit my old parrot system behind the radio system (RD4). I would also like to get some wiring documentation which would help if the factory bits are available. Any help would be most appreciated.