Chevrolet C70 High Beam Indicator Bulb Size

The Chevrolet C70 high beam indicator requires bulb sizes 194 and 1445 for proper illumination within the dashboard assembly. Available data for the specified components covers the range from 1960 to 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
1979-1982	1445
1960-1961	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 C70 high beam indicator uses two distinct bulb types across its model years: 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 12 volts and 3.78 watts. Its wedge base design means it is held in place by the socket itself rather than by a separate locking mechanism or bayonet pins.
The 1445 bulb is a single-filament type with a BA9s base, rated at 12 volts and 2 watts. The BA9s is a small bayonet cap base with a 9mm collar, commonly found in indicator and warning light applications.
The C70 used the 1445 bulb for the high beam indicator in 1960-1961 and again in 1979-1982, while the 194 bulb was specified for 1983-1987.
The 194 and 1445 bulbs are not interchangeable. Their base types differ fundamentally, with the 194 using a wedge fit and the 1445 using a BA9s bayonet cap, meaning the sockets for each are physically incompatible.
The wattage difference between the two bulbs is also a relevant fitment consideration. The 194 draws 3.78 watts while the 1445 draws 2 watts, so substituting one for the other would alter the electrical load on the indicator circuit regardless of any physical compatibility.