I recently remove my y7 from my civic 2000 to put a rebuilt y8. I put the complete engine wiring harness but I dont had the y8 harness inside the car, I cant connect my secondary O2 sensor now I have a check engine light always on

what I have to do to connect it correctly ??

 

You have to use an extension harness if you are using the Y8 catalytic converter, check my signature below

 

close ! I find where to connect my wiring directly to ecu

thx