Buick Electra Dome Light Bulb Size

The Buick Electra dome light utilizes bulb sizes 561, 562, 211-2, 212-2, 194, 89, 1004, and 90 depending on the specific vehicle configuration. Available data for the lighting components spans a range from 1959 to 1990.

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
1990	561
1986	562
1974-1985	561
1973	211-2
1972	212-2
1971	194
1970	89
1969	211-2
1963-1968	1004
1959-1962	90

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90

Other Locations

Additional Notes

The 561 bulb is the most frequently specified dome light bulb for the Buick Electra, covering model years 1974-1982, 1984-1985, and 1990.
The 561 is a festoon-type bulb rated at 12V and 12W, with a 44mm length and end-cap contacts that seat into spring-loaded holders on each end of the fixture.
The 562 bulb, specified for the 1986 Buick Electra, shares the same 44mm festoon form factor, voltage, and wattage as the 561, making the two physically and electrically similar.
The 211-2 and 212-2 are both 41mm festoon bulbs with an SV8.5 base, rated at 12V and 12W. The SV8.5 base uses a different mounting style than the end-cap contacts of the 561 and 562, so the two festoon families are not directly interchangeable despite sharing the same wattage.
The 1004 bulb, specified for model years 1963-1968, is a dual-filament bulb with a BAY15d bayonet base rated at 12V and 21/5W. The BAY15d base has two offset pins to prevent incorrect installation of the dual-filament design.
The 90 bulb, used in model years 1959-1962, is a single-filament bulb with a BA15s bayonet base rated at 12V and 13W. The BA15s base has a single pin and is not compatible with the dual-pin BAY15d socket used by the 1004.
The 89 bulb specified for the 1970 model year also uses a BA15s bayonet base at 12V and 13W, making it electrically and physically similar to the 90. Both are described as single-filament variants within the same base family.
The 194 bulb specified for the 1971 model year is a miniature wedge-type bulb in the T10 form factor, rated at 12V and 3.78W. Its wattage is substantially lower than all other bulb types listed across these specifications, and its wedge base is mechanically distinct from both festoon and bayonet mounting types.
Across the full range of these specifications, four distinct base types are represented: end-cap festoon (561, 562), SV8.5 festoon (211-2, 212-2), BA15s bayonet (89, 90), BAY15d bayonet (1004), and T10 wedge (194). Substituting a bulb from one base family into a socket designed for another is not supported by these specifications.
All bulb types listed in these specifications conform to ANSI standards applicable to the United States and Canada, indicating standardized electrical and physical tolerances across the range.