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Just looked up the knock sensor in the fsm. It only has one wire coming from the PCM and that goes to the knock sensor, then grounds through the knock sensor body. The other wire is a shielding wire to prevent Electro-Magnetic Interference. Spec for testing is Terminal A of the knock sensor connector should have 500 to 620 Kilo-ohms resistance to ground. The shielding wire should have almost no resistance to ground.
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Baling Wire-The Duct Tape Of Champions
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