Since i am converting the CRX HF w/ D16z6 to OBD1. I need to convert the O2 sensor to a 4 wire OBD1 O2 sensor as well. My question is what can i do to convert it so it's like a plug and play. Since OBD0 O2 sensor is one wire where exactly does the 4 wire of the O2 sensor goes to?

 

You'll have to run new wires directly from the O2 to the ECU. It's easier to just make a 4 wire harness that is standalone and just ziptie it to your exisiting harness.

 

if i buy the OBD0 to OBD1 conversion harness. The wires should be there on the conversion harness?

 

yes they are and you can use any o2 sensor from 92-01 honda/acura