I have tried the manuals but I am no electrician it all looks greek to me. LOL Anyways I found a color schematic but its just trying to match everything thats already on the bike and I have no clue what the PO did.
If yours is like mine the PO probally had an after market fairing on it for a while. That ment the colours on the front headlight were sometimes changed from standard. If he did it properly then the wiring should have just been extended.
No help I'm afraid but at least an idea why your facing this now.