Chevrolet Celebrity Courtesy Bulb Size

The Chevrolet Celebrity courtesy light utilizes 194 and 212-2 bulb sizes depending on the specific version of the vehicle. Available information covers the production span from 1982 through 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	194
1985-1988	212-2
1984	194
1983	212-2
1982	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2

Other Locations

Additional Notes

The Chevrolet Celebrity courtesy bulb specifications reference two distinct ANSI-standard bulb types across its model years: the 194 and the 212-2.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, conforming to ANSI standards applicable in both the United States and Canada.
The 212-2 is a festoon bulb with a 41mm length and an SV8.5 base, also rated at 12V but drawing significantly more power at 12W, conforming to the same ANSI standards.
The higher wattage of the 212-2 relative to the 194 reflects a fundamental difference in bulb construction and socket type, making the two bulbs physically and electrically incompatible with each other's housings.
The 212-2 festoon format uses an SV8.5 base, in which the bulb is held in place by contact at each end rather than by a wedge or pin, a distinction relevant to fitment.
The 194 wedge bulb relies on its plastic wedge base to make electrical contact, a mounting method that is not interchangeable with the end-contact festoon socket used by the 212-2.
The 212-2 specification applies to the Chevrolet Celebrity for model years 1983 and 1985-1988, while the 194 applies to 1982, 1984, and 1990.
The alternation between bulb types across non-consecutive model years indicates that the courtesy light housing design was not consistent throughout the Celebrity's production run.