Ford L8000F Map Light Bulb Size

The Ford L8000F map light requires a 912 bulb size for proper installation and function within the interior lighting system. Available information covers the specific range from 1987 through 1997 for the provided vehicle data.

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
1987-1997	912

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912

Other Locations

Additional Notes

The Ford L8000F uses the 912 bulb size for the map light across all listed model years, spanning 1987-1997.
The 912 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared across manufacturers.
The 912 bulb follows the T15 wedge form factor, where "T15" refers to a tubular bulb body 15 eighths of an inch wide, and the wedge base replaces a traditional metal screw or bayonet base with a plastic pinch-style connector.
The 912 operates at 12 volts and 12 watts, which is consistent with standard automotive low-voltage electrical systems.
The 912 is a variant of the 921 bulb. While both share the same T15 wedge base and 12-volt rating, the 921 operates at a higher wattage of 16.8 watts, making the two bulbs electrically non-equivalent despite their physical similarity.
Because the 912 and 921 share the same wedge base, the 921 is physically interchangeable with the 912 in the Ford L8000F map light socket, though the difference in wattage means the 921 draws more current than the original specification calls for.