What you're describing sounds like a lot of military connectors, aka Cannon plugs or Amphenol connectors. There are several thousand variations out there.
PMDX has a nice pair of connectors for a reasonable price, http://www.pmdx.com/ConnectorsMisc.
Might be easier to replace the connectors on your box than to try and guess. On the other hand, contact the manufacturer of the control box and ask what the part number is. With part number in hand, there are several places which will either have the connector in hand, or can source it for you.
These places come to mind: Newark, Digikey. Certainly there are others which don't jump into my mind at this late hour.
Another which is a bit expensive, but has every connector known to man, is Electronic Connectors, in Chicago.