Ford Sprint Dome Light Bulb Size

The Ford Sprint dome light bulb uses a 1003 size bulb for interior illumination. The replacement chart covers 1963 to 1964 vehicle 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.

Bulb Size by Year Range

Years	Bulb Size
1963-1964	1003

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003

Other Locations

Additional Notes

The 1003 bulb is an ANSI-standard type used in the United States and Canada, operating at 12 volts with a 21-watt output and a single filament.
The 1003 uses a BA15s bayonet base, which is a single-contact bayonet mount. This base type is not interchangeable with double-contact bayonet variants such as the BA15d.
The Ford Sprint uses the 1003 bulb for the dome light across both the 1963-1964 model years.