There are 4agze wiring diagrams on the net. Just take apart your current loom and the 4agze loom and add/subtract the wires from your current loom. In some cases you can reuse wires i.e. CAS, map, TPS but you will need to add the ignitor/injectors (ballast resistor)/fuel pump relay/various VSV/probably other things too. I didnt bother with the fuel pump relay, just ran the pump full stick the whole time.m You also need to put new ECU plugs on your current loom and can the dash plug around a little