I have a 96 hatch and im trying to swap to a b16a2 but the I have a problem with the 02 sensor that goes to the catback. I have the whole front clip of an 2000 si, the sensor goes through the floor and I followed the wire but couldn't find where is goes to. I followed it all the way behind the dash but I couldn't follow it anymore, so how do I hook up this o2 sensor? Please help me Thanks