1992 honda prelude 2.3 si oxygen sensor wiring diagram
 

I just got this denso aftermarket o2 sensor and there is no harness on it, so i have to take the old harness and put it on the new sensor. Do you have a pic or can you tell me what the wires are on the original o2 sensor, ground, heater wire ect...

If not can you tell me how i can find out.

Re: 1992 honda prelude 2.3 si oxygen sensor wiring diagram (92preludesi2.3)
 

I don't have my O2 sensor in front of me, so this is going off the Helms manual:

Using this diagram, you're looking at the O2's connector:

http://catimages2.sophio.com/webapp/...l/25024601.jpg

The Helms lists the connector from the wiring harness side, so the coordinating wires on the O2 connector are:

Top right: (heater +)
Top left: (heater - )
Bottom right: (sensor + )
Bottom left: (sensor - )

Hope that helps. https://honda-tech.com/forums/images/smilies/emthup.gif