Some items from this specific schematic: Lamp Assy,rr Turnsignal,l, Plate,turnsignal Lamp, Relay Assy,turnsignal Lamp, Nut.
On this parts fiche the Bulb(12v21w) is the most specified component.
Of all the components used in this assembly the Lamp Assy,fr Turn Signal,l is the most expensive.