Tony.... actually, that's a great idea. Just slap some pins on there. Probably end up doing just that!

Tim... That might be of help. If I know what that socket is usually used for I'll have a better idea of where to search

Darrell... Thanks for the link. Turns out it's definitely not DIN or mini-DIN. A buddy seems to think it was a pretty common connector back in the late 80's ... maybe an early DIN format or something.