On this parts fiche the Neo Wedge Bulb is the most specified component.
This Interior Light-switch diagram displays the required parts for the Civic 1990 (l) 4dr Lx (ka,kl) Interior Light-switch.
Parts such as the Interior Light-switch: Light Ass*yr126l*, Controller Illumi, Lens, Sw Assy,rr Def are included in the Civic 1990 (l) 4dr Lx (ka,kl) Interior Light-switch parts fiche.