I have the bimmernav kit for my June 2002 E39 M5 with Nav, TV, BMW/Motorola phone with compensator, DSP amp.
I have changed over the arm rest snap in adaptor, removed the existing motorola phone module from above the Nav unit and I have located all of the required antenna plugs, except for the 54 pin connector that plugs into the BMW/Bimmernav ULF module.
Martin is offline (hopefully he is in Saturday morning), and I have the rear of the car apart searching for this 54 pin plug that is supposed to be forward of the old phone module connector.
I have just about given up, and was hoping someone here may have had the same problems, and found the solution.
Hopefully this is not a Australia only problem.

Scott
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2002 M5 Carbon Black
Black/Grey leather
Brushed Aluminium trim
AiB 3.0 angel eyes
AiB xenon match fogs
BMW 545 shifter
Dinan rear sway bar
TCD rear sway bar brackets
X5 4.8 thrust arm bushings
Audio - DSP, MBQuart speakers, Alpine LAT sub, ipod 160G Classic/intravee II/KCA 420i
Bimmernav Bluetooth upgrade
phone cradle V3xx modified
Solaris invisi-bulbs
Yokohama Advan sport V103 tyres
MkIV Nav V31 custom splash
removed - rogue SSK, dinan camber plates, koni FSD, umnitza predator ice
2004 Toyota Landcruiser Kakadu 4.2 turbo diesel
ex 1959 FC Holden sedan