Chevrolet C50 High Beam Indicator Bulb Size

The Chevrolet C50 high beam indicator uses bulb sizes 194 and 1445 for the specified lighting component. Available data for the bulb sizes covers the range from 1960 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
1983-1987	194
1960-1982	1445

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W.	1445

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Additional Notes

The Chevrolet C50 high beam indicator uses two distinct bulb types across its production span: the 194 and the 1445, both of which conform to ANSI standards recognized in the United States and Canada.
The 194 bulb is a T10 miniature wedge type rated at 12V and 3.78W. The wedge base design means the bulb is held in place by the socket itself rather than by a separate metal base, which is a common trait of T10 wedge bulbs.
The 1445 bulb is a single-filament type fitted with a BA9s bayonet base, rated at 12V and 2W. The BA9s base has a 9mm cap width and uses a single pin for retention, a configuration standard in small indicator applications.
The C50 models from 1983-1987 use the 194 bulb for the high beam indicator position.
The C50 models from 1960-1982 use the 1445 bulb for the high beam indicator position.
The two bulb types are not interchangeable. The 194 uses a wedge base while the 1445 uses a BA9s bayonet base, meaning the socket design differs between the two fitment groups.
The 194 draws 3.78W compared to the 1445 at 2W, reflecting a difference in power consumption between the two bulbs despite both operating on a 12V system.