I just completed a swap on my 99 honda civic lox automatic and put in a b16a2 out of at 2000 si and a 5 speed conversion, i am only seeing one connector on the harness to hook an oxygen sensor up. Do i have to do any wiring or is there another connector that I am missing. My stock motor had two o2 sensors and I used the si engine harness so I wouldn't see why there is only one plug for an o2 sensor.....thanks for any help.

 

The SI's 02 sensor is not in the engine bay, it is by the shift linkage under the car at the cat converter. i think you would have the extend one of the o2 wires plug to the back.