Parts such as the Headlight(s): Nut,5mm, Bulb,12v-60155w, Lens-comp,head Lamp, Bracket,head Lamp,lh are included in the En450a5 Ltd450 1989 Europe Uk Ar Fg It Nr / Liquid Cooled Headlight(s) parts fiche.
Check out any of the twenty-seven Headlight(s) components enlisted.
In this schematic the "Bolt-flanged" is used most often.