American Motors Spirit Map Light Bulb Size

The American Motors Spirit map light requires bulb size 211-2, 105, 1004, or 561 depending on the specific version. Data for the map light covers the range from 1979 to 1983.

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
1983	211-2
1981-1982	105
1980	1004
1979	561

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561

Other Locations

Additional Notes

The American Motors Spirit map light used four distinct bulb types across the 1979-1983 model years: the 561, 1004, 105, and 211-2.
The 211-2 and 561 are both festoon-style bulbs, meaning they are cylindrical in shape and mount between two contact points rather than inserting into a socket. Despite their similar function and wattage of 12W at 12V, they are not interchangeable due to differing lengths of 41mm and 44mm respectively.
The 105 bulb, fitted to the 1981-1982 Spirit, uses a BA15s single-contact bayonet base and is rated at 12V and 13W. It is noted as a variant of the more widely known 1156 bulb type.
Because the 105 is a variant rather than a direct equivalent of the 1156, substitution with a standard 1156 bulb warrants verification of physical and electrical compatibility before use.
The 1004 bulb, used in the 1980 American Motors Spirit, carries a dual-filament design with a BAY15d bayonet base and is rated at 12V with a 21/5W output. It is a variant of the 1157 bulb type.
The dual-filament construction of the 1004 means its BAY15d base has two offset pins to prevent incorrect installation, distinguishing it physically from the single-filament BA15s base of the 105.
All four bulb types conform to ANSI standards applicable in both the United States and Canada.
The shift from festoon to bayonet base formats across model years reflects changes in socket design within the Spirit's map light housing, meaning bulbs from non-corresponding years are not drop-in replacements for one another.