Thanks for all the help so far, I ended up buying this
http://cgi.ebay.pl/ws/eBayISAPI.dll?ViewItem&item=180605717424as could not figure out the wiring. When I checked this to the loom I had it turned out that the existing loom only had a plug with 2 rows of connections on where the one from e-bay had 3, only 1 wire on the third row at position 41 Interface to mob phone Term 30 (may be wrong but will check later). Have now fitted the new loom into the car and have
Address 77: Telephone Labels: 3C0-035-730.lbl
Part No SW: 5N0 035 730 C HW: 5N0 035 730 C
Component: J412 8506
Revision: 00019000 Serial number: 0000A07751228
Coding: 0021141
Shop #: WSC 00152 210 91233
VCID: 285510EAE275
1 Fault Found:
01524 - Antenna for Telephone
011 - Open Circuit
Freeze Frame:
Fault Status: 01101011
Fault Priority: 3
Fault Frequency: 1
Reset counter: 233
Mileage: 37803 km
Time Indication: 0
Did some recoding and now have this
Address 77: Telephone Labels: 3C0-035-730.lbl
Part No SW: 5N0 035 730 C HW: 5N0 035 730 C
Component: J412 8506
Revision: 00019000 Serial number: 0000A07751228
Coding: 0013241
Shop #: WSC 00152 210 91233
VCID: 285510EAE275
Still have a couple of minor problems in that when I turn the ignition on the highline display will display Telefone and I can only transfer 1 name to the car from the phone address book but it will read all the messages. And on the phone screen on the RNS510 I have preset 1 as Mobile Box and cannot seem to change it in any of the settings.