Shoot ARC2000 an email. If anyone has those pieces it'll be him.

If worse comes to worse and you can't find the male plastic connector you can use the bare terminals with a bit of heat shrink to insulate them from each other (until you eventually find that part). You can use the original bulkhead connector - just pop the pins out and plug in your new wires.

My guess is if Stefan has one end of the connector he's sure as hell got the other!