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Not seen one like that, not std as far as I can recall, is it a wire as it looks very thick gauge for that sort of connector, look in the end, maybe it is a vac connection, soon see if there's a terminal in there, if not follow other end see where it goes, maybe for something that is no longer on the car ?
tabetha
As said it looks like a vaccum hose with an electrical like connector only electrical connector on, not one I know of as standard if electrical, dizzy should be phase sensor and the ignition leads on the cap!