The wiring harness on this car if you look at the picture- The one knock connector wire color is white which is what every one I see are. The other wire color is Grey...every other one Ive seen is a black wire... not grey.
Just another observation to note trying to figure out what could be going on. I have no idea where this wiring harness was from as it was replaced in california around ~2001-2003 ish. The car was built originally CA emissions (maybe thats why the wire is grey not black to differentiate it from the EGR temp sensor colors?)