Buick Century Map Light Bulb Size

The Buick Century map light utilizes bulb sizes 212-2, 906, 1004, 211-2, 561, and 90. Available information for the specified vehicle components covers the range from 1958 to 2005.

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
2004-2005	212-2
1997-2003	906
1985	906
1983-1984	1004
1976-1982	211-2
1975	561
1973-1974	211-2
1958	90

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90

Other Locations

Additional Notes

The 906 bulb is the most frequently specified map light bulb across the Buick Century's model history, covering the 1997-2003 and 1985 model years.
The 906 is a T10 miniature wedge bulb rated at 12V and 8W, making it among the lower-wattage options found in these specifications.
The 211-2 is the second most common bulb type in these specifications, appearing across the 1973-1974 and 1976-1982 model years.
The 211-2 is a festoon bulb with an SV8.5 base and a 41mm length, rated at 12V and 12W.
The 212-2, specified for the 2004-2005 Buick Century, shares the same SV8.5 base, 41mm length, and 12V/12W rating as the 211-2, making the two bulbs physically and electrically identical by ANSI specification.
Despite the near-identical specifications of the 211-2 and 212-2, they carry distinct ANSI designations and are listed separately across different model year groups.
The 1004 bulb, specified for 1983-1984, is a dual-filament bulb with a BAY15d bayonet base rated at 12V and 21/5W, and is noted as a variant of the 1157.
The presence of dual-filament technology in the 1004 bulb is atypical for a map light application, as map lights conventionally use single-filament bulbs.
The 561 festoon bulb, specified for 1975, uses end-cap contacts rather than an SV8.5 base, distinguishing it from the 211-2 and 212-2 despite sharing the same 12V/12W rating.
The 90 bulb, specified for the 1958 Buick Century, uses a BA15s single-contact bayonet base and is rated at 12V and 13W, a base type not shared by any other bulb in these specifications.