Thanks Avionics bloke, for that very succinct advice. I will seek out the required adaptor (shame, I was at the pilot's shop two days ago, looking at a display of such things I did not think I needed!). In light of your very helpful information, is there any sure way to identify which connector type is in which helicopter type, without going to the parts catalog? I would not have expected to find UK connectors in a US helicopter, or, apparently, a US connector in an AStar! Would I expect to find a placard, or information in a flight manual?
Cheers, Pilot DAR