As I was plugging in all my connectors on the EFI harness today, I came across a plug which I have never laid eyes on before. On comparison with my old harness, it does not exist. My old harness is what I am guessing is a stock 1990 N/a auto harness. The new one is a 1993 N/a auto harness. Take a look, does anyone know what its for? Its right near the det sensor plug on the middle back of the engine. I think it comes off the part of the harness which coil number 6 is located.