I know this is kind of out there but its worth a try. Theres a bundle of wires that goes down by the headers on the passenger side. I believe there are 5wires in this bundle. One goes to the 02 sensor and its kind of grayish. One goes to the starter (its a big purple one). Two look like grounds and they are black and have connectors that go over a bolt like most ground wires so Im guessing thats what they are. There is a bluish-teal colored wire that had no connector on it, it was just cut, and I have no idea what it goes to. Any ideas? Or any way to find out what it is?

 

I believe that would be the knock sensor. The black one is the PCM ground

 

That would make sense seeing as how I couldnt find the wire to plug up to the knock sensor. Thanks! There are two black wires though...?