If you are just trying to reconnect a stock wiring harness, Honda had a color code. In general:
Solid green wires are ground, and anywhere you have 2 solid green wires that mate up, do so.
Green wires with a tracer, or stripe, are a switched ground, like the oil pressure switch.
Solid black wires are +12V from the ignition switch.
Brown wires are used for lights.
Again, match like colored wires, including the tracers.
Hope this helps.