With an open hangar and typical coastal blustery and wet November weather conditions I was driven to take my wiring home for soldering the J4 cable bundle (between the Harness Support Tray and the control panel centre console) to the D-Sub connector for the VHF Radio. I also figured out now that the used Transponder I bought on e-Bay required me to purchase come crimp pins (i.e. not soldered) and a matching D-Sub connector to the one that came on the unit.