I fitted this to my old Mk5 - simple plug and play with the AUX input located behind the gear stick. http://www.ebay.co.uk/itm/Switch-Plug-AUX-Cable-For-VW-Volkswagen-GOLF-JETTA-Sagitar-RCD510-300-Cuddly-/201162109859?pt=UK_In_Car_Technology&hash=item2ed63233a3
Its as easy as inserting the plug into the Quadlock that plugs into the back of the stereo and away you go :)
I can supply Pnp Bluetooth loom with Euro spec Microphone (Not Chinese)