I am switching my car from ODB2 - ODB1. I have directions to wire pins 21 & 22 on the blue connector together then place a 2kohm resistor from these pins to ground.

This will trick the computer to see the knock sensors correctly.

Question is: How do know which pins are 21 & 22?

 

Go to Shoebox's website... he has tons of diagrams, photos, etc. Included the factory wiring diagrams, with a diagram that shows the pin numbering scheme on each connector.

If you haven't used Shoebox's Tech Website you're missing out on a valuable resource.

 

Thanks Injuneer... I found that diagram after I had already posted.

 

Careful. Those instructions are for a dual knock sensor Impala or Corvette. F-bodies use a 3.9 kOhm resistor between pin 22 and ground.