As with all things technical we have required a bit of support!  We even had to contact Phil Rogers (OR's previous owner!) for OR's call sign, but finally we have a fully functional DSC radio, MMSI, AIS, GPS, remote handset - Uncle Tom Cobley and all!   Chris Reid has been the mastermind behind the installation - so many thanks!    As you will see from the photo the wiring is definitely no longer jumbled.