I put Kook's headers on a bit ago, now I'm getting around to putting the O2 extension on the passenger side. I have a 94 so I only need 1 extension...anyways I have the extension hooked up to the O2 sensor itself. My problem is that now I can't find the O2 connection piece that goes to the PCM. I didnt have the extension when I did my headers...but anyways which wires from the engine/PCM would I trace back to find the O2 connection?

 

it should near the k-member and the bolck at the bottom

 

well i'm not sure if this is what your looking for but you should be able to disconnect the 02sensor should have a tail that is clipped into another wire. You should be able to disconnect that and then take the 02 extension and connect it to the orginal extension then connect the other end of the 02 extension to the tail of the o2 sensor

If this doesn't help. haha sorry didnt know how to explain it or if its completely wrong.

 

You have two O2 sensors, so you need two extensions.

 

The original O2 sensor and connections were long enough on the driver's side so I didn't need an extension for that side. Passenger side needed one though

 

If I read this correctly, you "lost" the harness connector for the passenger side O2 sensor, and can't find it hanging under the car. According to the harness photo on Shoebox's website, the O2 wires are bundled in the harness with the knock sensor, the nearby block ground and a thin starter wire. Find one of those and trace it back to the point where they are all bundled in the harness cover.

http://shbox.com/1/harness.htm