Where is the knock sensor located on a 1996 Infinity G20?

The knock sensor is located about 6" behind the oil filter, mounted on the engine block.

To see it is nearly impossible, there is not clear line of sight, but I placed my laptop on the engine and and I dropped the webcam behind the engine. I attached the webcam to a wooden stick so I can turn it. I also dropped a work light behind the engine as well. Replacing it is another story. I had the car on a ramp and worked from beneath. You can't see it and worked by feeling it, and you can not use both hands, there is no room. I had to cut a open wrench (if you don't have a stubby), I believe is a 12mm. I all honesty I gave up installing it, but I ultimately appealed to God for help, right there, under the car. To thread the bolt through the knock sensor, holding it right, placing it over the threaded hole in a very crammed space and turning the bolt, mostly using your index finger because there is no room for the thumb, using only your right hand and not seeing what you do IS A MIRACLE.

Note. After I removed the old one I pulled it up (the wire harness is long enough and allows) to the top of the engine where i could disconnect the old and attach the new. Good luck. (unfortunately I deleted the snapshots I took with the webcam...)