The most reasonably priced component used on the Gs850g 1982 (z) Usa (e03) Turn Signal Lamp is the Screw.
Parts such as the Turn Signal Lamp: Unit,turn Signal Control, Gasket (nas), Bulb(12v23w,stanley,a4577a), Gasket (nas) are included in the Gs850g 1982 (z) Usa (e03) Turn Signal Lamp parts fiche.
This schematic depicts all components used in the Gs850g 1982 (z) Usa (e03) Turn Signal Lamp partslist.