I have a 89 Si with OBd0 JDM b16 in it. I wired up all the extra wiring and everything thing works right except the knock sensor is still throwing a code. I pinned the wire into b19 on my PR3 ecu. I just bought another knock sensor so I am pretty positive its not the actual knock sensor. My question is there any way to check the wiring with voltmeter or ciruit tester?