Well would you believe it - Just had a quick look in the garage, and found an unissued Mk2 / Mk3 helmet pigtail with the older smaller LEMO connector!
14 tiny contacts, 7 male, 7 female.
I guess this is the type that was susceptible to damage?
I could actually now configure both a Mk3 and a Mk4 helmet to suit Tornado for display.
Now, it's tempting to make an assumption that the Mk12 PEC's shown in the diagrams
here would suit this older smaller connector, as they appear to have smaller connectors on their cables. Those images are from 1975 and 1983 (the 1983 one could always be unrepresentative of what's actually in service though). I wonder what year the upgrade was made to the later bigger LEMO connector?
Cheers, Scott.