Pontiac LeMans Dome Light Bulb Size

The Pontiac LeMans dome light utilizes bulb sizes 561, 211-2, 194, and 1004 depending on the specific production version. Available information covers a span of time starting from 1963 through 1981.

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
1975-1981	561
1972-1974	211-2
1971	194
1965-1970	211-2
1963-1964	1004

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, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004

Other Locations

Additional Notes

The 211-2 is the most frequently specified dome light bulb for the Pontiac LeMans, covering the 1965-1974 model years with the exception of 1971, as well as 1970 and the earlier 1964 and 1963 entries excluded.
The 211-2 is an ANSI-standard festoon bulb rated at 12V and 12W, with a 41mm length and an SV8.5 base, meaning it uses a specific barrel-style contact base rather than simple end caps.
The 561 is specified for the 1975-1981 model years of the Pontiac LeMans dome light, making it the second most recurring bulb type across the listed specifications.
Although the 561 and 211-2 share the same 12V, 12W electrical rating, they are not interchangeable due to differing physical formats: the 561 measures 44mm in length with end-cap contacts, while the 211-2 measures 41mm with an SV8.5 base.
The 1004 is specified for the 1963-1964 model years and is a dual-filament bulb using a BAY15d bayonet base, rated at 12V with a 21/5W output reflecting its two separate filaments.
The 1004 is noted as a variant of the 1157 bulb type, which is a widely recognized automotive bulb; however, the two are not necessarily interchangeable, as variants may differ in filament wattage or base tolerances.
The 194 is specified solely for the 1971 model year and is a miniature wedge bulb of the T10 form factor, rated at 12V and 3.78W, a substantially lower wattage than all other bulb types listed in these specifications.
All four bulb types listed across these specifications conform to ANSI standards applicable in both the United States and Canada.
The shift from the 211-2 to the 561 between the 1974 and 1975 model years represents a change in base type, from the SV8.5 barrel base to end-cap contacts, despite both bulbs sharing identical voltage and wattage ratings.