Thanks for the reference. Here is what I found, I found the silver box with the proper cable (looks like the Bluetooth ULF unit - no side lablel)) in the proper place. But no Bluetooth Antenna, at least not above the MKIV DVD.
I followed the ULF unit (?) cable to a antenna (?) of some sort, deeper in side compartment (high over the rear driver's side wheel), but it's too deep to read the label.

Any ideas? Thanks