Chevrolet Brookwood Glove Box Bulb Size

The Chevrolet Brookwood glove box light uses 1895, 194, and 257 bulb sizes depending on the specific application. Data for the lighting components covers the period from 1958 through 1972.

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
1972	1895
1971	194
1969-1970	1895
1958-1961	257

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Festoon or BA9s base instrument bulb. 12V, 2W.	257

Other Locations

Additional Notes

The 1895 bulb is an ANSI-standard miniature wedge type with a T5 envelope, rated at 12V and 0.9W. It serves as the glove box bulb for the Chevrolet Brookwood across 1969-1970 and 1972.
The T5 envelope designation refers to a tubular glass form roughly 5/8 inch wide, which is among the smallest wedge base configurations in common automotive use.
The 194 bulb is an ANSI-standard miniature wedge type with a T10 envelope, rated at 12V and 3.78W. It applies solely to the 1971 model year.
The T10 envelope is physically larger than the T5, and the 194 draws over four times the wattage of the 1895. These two bulbs are not interchangeable despite sharing the same wedge base category.
The 257 bulb is an ANSI-standard instrument bulb rated at 12V and 2W, available in either a festoon form or a BA9s bayonet base. It is specified for the glove box across 1958-1961.
The festoon and BA9s base variants of the 257 represent distinct physical configurations. A festoon bulb seats by contact pressure at each end, while a BA9s bulb uses a bayonet pin mount, making the two non-interchangeable without a socket adapter.
All three bulb types across these specifications share a 12V operating voltage, consistent with the 12-volt electrical systems standard in domestic passenger vehicles of this era.
The 1971 Brookwood stands apart from adjacent years in this specification set, as it is the only year assigned the higher-wattage 194 bulb rather than the lower-wattage 1895.