I have a 92 VX with a 96 B18C5 in it. I'm using the ITR harness. The ECU is a P73 with an OBDI to OBDII jumper from HMotors. My problem is this. The VX used a 5wire O2 sensor. The ITR is only a 4wire. Where my VX 5wire plugged into the firewall harness there is an empty plug on the right strut tower. I wish it was as simple as removing a wire from the harness. But the more I research and look into it the more confusing it gets. I need someone that has maybe done this to help point me in the right direction as to which wires in which strut tower plugs I need to repin and to where. I've searched on a lot of swap forums and no one seems to have the info on doing this. Please if you can help me out I would greatly appreciate it.