American Motors American Map Light Bulb Size

The American Motors American map light utilizes a 1004 bulb size for the interior lighting system. Data for the specific component covers the period from 1962 through 1968.

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
1962-1968	1004

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004

Other Locations

Additional Notes

The American Motors American uses the 1004 bulb for the map light across all listed model years, spanning 1962-1968.
The 1004 is an ANSI-standardized bulb recognized in both the United States and Canada.
It is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, each operating at a different wattage.
The 1004 operates at 12 volts with a wattage rating of 21/5W, where the two figures correspond to its high and low filament outputs respectively.
The 1004 uses a BAY15d bayonet base, a two-pin base type where the pins are offset at different heights to ensure correct orientation during installation.
The 1004 is a variant of the 1157 bulb. While the two share the same BAY15d base and dual-filament design, they are not identical, and substitution between them warrants attention to voltage and wattage compatibility for the specific application.