Chevrolet Celebrity High Beam Indicator Bulb Size

The Chevrolet Celebrity high beam indicator uses bulb size 158 or 194 depending on the specific version of the component installed in the vehicle. Data for the bulb sizes covers the range 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	158
1987-1988	158
1982-1986	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.	158
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

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Additional Notes

The Chevrolet Celebrity high beam indicator uses two distinct bulb sizes across its production run: the 158 and the 194, both of which are ANSI-standard miniature wedge bulbs classified under the T10 form factor.
Both the 158 and 194 bulbs operate at 12 volts, which is consistent with standard automotive electrical systems.
The 194 bulb draws 3.78 watts, while the 158 draws 3 watts, making the two bulbs electrically distinct despite sharing the same T10 wedge form factor.
Because the 158 and 194 differ in wattage, they are not functionally interchangeable, even though their physical T10 wedge base may allow one to seat in the other's socket.
The Chevrolet Celebrity (1982-1986) uses the 194 bulb for the high beam indicator across five model years.
The 158 bulb applies to the 1987, 1988, and 1990 model years, representing a change from the 194 used in earlier production.
Both bulb types carry ANSI designations valid for vehicles sold in the United States and Canada, indicating compliance with North American automotive lighting standards.
The T10 wedge base is a pinless design that is retained in its socket by the tension of the base itself, which is a common construction for low-wattage indicator applications.