That's huge! Like a Fred Flinstone era OBD port or something?

Diagnostic connector, IIRC.
-- A
BingoYeah, more like whole-vehicle diagnostic, seeing as there isn't a computer on the thing. I figure there's pins for the electrical supplies, so you can check the alternator(s), battery(ies), etc.
Yep. Thanks to the guys over on SteelSoldiers you can't find a STE-ICE doemahickey for less than $500 lately so mine is just a conversation piece.I think I unscrewed the cover on mine once, went "ooh" and then put it back
-- A