I have a 90 Si and I am finally putting my B16 in. My question is: I'm using my Si harness on my B16 which fits suprisingly well, the Si uses a SINGLE O2 sensor, the B16 uses DUAL O2 sensor which you all know. Here is the hard part, does the b16 o2 sensor with the ROUND connector plug into the Si harness with corresponding ROUND connector and then I run another wire to the ecm for the O2 sensor with the FLAT connector with the GREEN wire? According to the info I found on all my searches, this would be wrong because pin C8 is for O2 sensor "B" which is the round one and pin C16 is for O2 "A" the flat one so I would have to switch the sensors? I am very confused. Can anyone give me a definite answer, I cant afford to have any mistakes with this build. Thanks in advance fellow HT users.
Ian.