I have been (and still am) looking for an Amundsen unit to go into my Fabia Monte Carlo but have been getting limited results as I want DAB radio and bluetooth.   I was initially told that all RNS315 units have built in bluetooth but this has been contradicted by others (including sellers of Skoda Amundsen units) .  Anyone know for certain or what I should check to confirm.     If I search a well know auction site, there are lots of VW RNS 315 head units - are these also plug and play with a