On my S50 manual wiring harness, there is a two pin rectangular plug that is near my O2 sensor plug.  It is in the same bundle with the O2 sensor plug and breaks off less than a foot from the O2 plug. I have no idea where it goes.  The car runs without it but I would like to know.  I'll get the wire colors when I get back to the garage.  I couldn't find those wire colors in the Bentley or in the online wiring diagrams.
							
						
					What is this connector?
				
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