I just put the ZC engine in my 92 civic lx. I had to use my old engine wiring harness because the harness they gave me was reverse because it was from Japan. I got the engine working fine except for the vtec. How do you wire the vtec? I got the OBD1 wiring chart to find out where to put the wires in the computer. The guy I got the engine from said he gave me the right ecu. I put one wire in the computer for the vtec pressure switch and one wire in the computer for the vtec solinoid. I only had one ground wire. I did all that and the vtec doesn't work. I can't stand having a new engine that's not running at its full potential. Please help. I am hoping I don't have to buy a whole new harness because then I'll probably have to take the engine back out to put the new harness on. The guy I got the engine from said all I had to do was put two wires to the ecu and 2 wires to ground. Other than that he didn't know anything else. I'll pay $50 cash to anyone that gives me the solution that works. I need the vtec to work.