The YO harness I bought was almost as good as an original. So its time vs money situation.
Dont waste much time with g**gle.
Print the wiring diagrams. Then lay out your existing harness on a board with everything labeled.
Then look for pictures as you need, but nothing working from the real thing.
Mark up the diagrams as needed - add in the ECU harness.
Make your own harness diagram. Harness being how the wires are bundled and connect.