wiring harness trouble

[ozmannnnn]

i just got my obd2 wiring harness, and tried putting it back in but ran into a wall of trouble, to many wires not enough connectors does any one know of a diagram or anything that could tell me where all the plugs on my motor are or anything at all

 

[RHDism]

Some key info missing.

What year and model car and the same from where this harness came from