Honda Motorcycle VT500C Shadow uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1983 to 1986 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Motorcycle VT500C Shadow uses the 9003 bulb across all documented model years, spanning 1983-1986, for both high beam and low beam headlight positions.
The 9003 is an ANSI-standardized bulb designation recognized in the United States and Canada, distinguishing it from region-specific equivalents used in other markets.
As a dual-filament halogen bulb, the 9003 houses both the high beam and low beam light sources within a single unit, which explains its application in both headlight positions on the VT500C Shadow.
The 9003 operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The bulb uses a P43t base, a bayonet-style mount with a 43mm collar, which determines physical socket compatibility and is a critical fitment factor when sourcing a replacement.
Because the same 9003 bulb serves both the high beam and low beam positions, only one bulb type is required for a complete headlight replacement on the VT500C Shadow across the 1983-1986 model years.
The 9003 shares its filament wattage and base type with the H4 bulb used in international markets, though the two designations reflect different regional standards and may carry fitment differences that affect interchangeability.