some more eletrical problems

[94legacy2.2]

I have he CEL light coming on here and there, mainly while driving.
Its codes

22-KNOCK SENSOR---open or shorted knock sensor circuit

32-OXYGEN SENSOR---The oxygen sensor circuit is open.


Now Ive replaced the knock sensor with a couple used ones but no idea if they work or not. Also fixed the plug on it to the newer style plug.

Next the o2 sensor I replaced with a known working one and still the same problem.
I bought the car with a A/F gauge in it, do you think that might have soemthing to do with it? The lights on the gauge arent very stable and they read RED to ORANGE and sometimes in green while in mid to full boost (7-9psi)
also noticed with the A/F gauge it will go LEAN when the windows are rolled down like a draw is happening.

If anyone has any ideas what to try next let me know

Thanks
Tyson