twenty-one components are shown in this Ls650 Savage 1988 (j) Usa (e03) Speedometer exploded diagram.
A sample from the products for the Speedometer include: Bulb(12v1.7w,t6.5), Socket,meter, Spring, Speedometer (kilo).
On this parts fiche the Bulb(12v3w,t6.5) is the most specified component.