Chevrolet Chevelle High Beam Indicator Bulb Size

The Chevrolet Chevelle high beam indicator requires bulb sizes 168, 194, and 1895 depending on the specific application. Data for the light components covers the period from 1964 through 1973.

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
1973	168
1972	194
1971	1895
1970	194
1969	1895
1964-1965	1895

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895

Other Locations

Additional Notes

The Chevrolet Chevelle high beam indicator specifications cover model years 1964-1965 and 1969-1973, with three distinct bulb types appearing across those years: the 168, 194, and 1895.
The 1895 bulb is the most frequently specified type, appearing in the 1964-1965 and 1969 model years, as well as 1971. It follows the ANSI standard for the US and Canada and is a miniature wedge bulb of the T5 form factor, rated at 12V and 0.9W.
The T5 form factor of the 1895 is physically smaller than the T10 form factor shared by the 168 and 194 bulbs. This size difference makes the 1895 incompatible with sockets designed for T10 bulbs.
The 194 bulb is specified for the Chevrolet Chevelle in 1970 and 1972. It is an ANSI-standard miniature wedge bulb using the T10 form factor, rated at 12V and 3.78W.
The 168 bulb appears exclusively in the 1973 model year. Like the 194, it is an ANSI-standard T10 miniature wedge bulb rated at 12V, but it draws 4.9W, making it the highest-wattage bulb among the three types listed.
Although the 168 and 194 share the same T10 form factor and 12V rating, their wattage values differ. The 168 draws approximately 1.12W more than the 194, which means the two types are not direct electrical equivalents despite their physical similarity.
The shift from the T5-based 1895 in 1971 to the T10-based 194 in 1972 represents a socket change between those model years, meaning parts from one year are not interchangeable with the other without a corresponding socket modification.