I sympathise; my LHS has turn signal, horn/PA, and Hi/Lo buttons with 9 wires. On the RHS I have start and headlight Off/Lo/Hi switches with 7 wires.
With some jiggling I have managed to sort it out. I won’t bore you with the details, but I can now have HL off (Off), HL on (Lo) or pilot light only on (Hi). Not original, but ... well maybe it is original
However, that aside, during my researches - note the plural; it was a long process - I came across the attached partial wiring diagram which is allegedly for 1972 UK CB570K2/CB500 models.
It does have the correct wiring for your switch, if that helps.