Chevrolet Chevette Seat Belt Warning Bulb Size

The Chevrolet Chevette seat belt warning light utilizes 194 and 168 bulb sizes for the specific interior illumination component. Data for the lighting specifications covers the period from 1977 through 1987.

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
1985-1987	194
1984	168
1977-1983	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The seat belt warning bulb for the Chevrolet Chevette spans model years 1977-1987, with the bulb size 194 used in ten of those eleven years.
The 194 bulb is an ANSI-standard miniature wedge type with a T10 base, rated at 12 volts and 3.78 watts.
The 168 bulb shares the same ANSI-standard T10 wedge base and 12-volt operating voltage as the 194 but draws more power at 4.9 watts.
Although the 194 and 168 bulbs share the same T10 wedge base form factor, their wattage ratings differ, and they are not designated as interchangeable replacements within these specifications.
The 1984 Chevrolet Chevette is the sole model year in this range specified to use the higher-wattage 168 bulb for the seat belt warning function.