Here Toyota Engine 4A-GE 20V wiring diagram. This engine wiring diagram can be used to install engine performance part of your car. This Toyota engine wiring diagram show the left fender wiring along with ECU connector and pin out. Blue wires schema is for starter wiring, pink for igniter wiring, red for interior power source, and green for 2 sensor wiring. Full 4A-GE 20V Wiring Diagram here.

This was quite helpful.
It would be really nice to have some more details on the ECU, and how to install the upgrade parts!!
Cheers
please could you send me a complete diagram of engine compartment
i am trying to wire a silver top with a black top computer