Just in case anyone want a knock sensor and needs to wire it on M20 harness, you don't need any wiring. One can use already shielded CID sensor plug.
I'm going from MS@ to Haltech for its superior Alpha-N running. Haltech has plenty of inputs (more than I need for this M20) so I decided to install a knock sensor.
If you get a sensor with the wiring lead (3rd pin is a shield wire), it plugs perfectly into CID plug with goes all the way back to ECU plug as shielded cable.
Hope someone finds it useful.

I'm going from MS@ to Haltech for its superior Alpha-N running. Haltech has plenty of inputs (more than I need for this M20) so I decided to install a knock sensor.
If you get a sensor with the wiring lead (3rd pin is a shield wire), it plugs perfectly into CID plug with goes all the way back to ECU plug as shielded cable.
Hope someone finds it useful.
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