Ford Club Dome Light Bulb Size

The Ford Club dome light utilizes bulb size 1003 and bulb size 63 for interior illumination. Data for the specified lighting components covers the range from 1953 to 1957.

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
1956-1957	1003
1953-1955	63

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 0.63W.	63

Other Locations

Additional Notes

The Ford Club uses two distinct bulb types across its 1953-1957 model years for the dome light position: the 1003 and the 63.
Both the 1003 and the 63 are ANSI-standardized bulbs recognized for use in the United States and Canada.
The 1003 bulb is a single-filament type rated at 12 volts and 21 watts, fitted with a BA15s bayonet base.
The 63 bulb is also a single-filament type operating at 12 volts, but is rated at only 0.63 watts, fitted with a BA9s base.
The BA15s base on the 1003 and the BA9s base on the 63 are physically incompatible with each other, meaning the two bulb types are not interchangeable.
The Ford Club (1956-1957) takes the 1003 bulb for the dome light.
The Ford Club (1953-1955) takes the 63 bulb for the dome light.
The wattage difference between the two bulbs is substantial, with the 1003 producing considerably more light output than the low-wattage 63.