Chevrolet Chevelle Ignition Bulb Size

The Chevrolet Chevelle ignition uses a 1445 bulb size for the specific component located within the dashboard assembly. Data for the bulb specifications covers the range from 1964 to 1967.

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 Type	Shop
1964-1967	1445	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W.	1445	Check Price

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Additional Notes

The 1445 bulb is the sole ignition bulb type listed for the Chevrolet Chevelle across the 1964-1967 model years.
The 1445 is an ANSI-standardized bulb, meaning its specifications are governed by a recognized North American industry standard applicable in both the United States and Canada.
The 1445 operates on a 12-volt electrical system, which is consistent with the standard automotive electrical architecture of that era.
At 2 watts, the 1445 draws very little power, a characteristic typical of instrument and indicator bulbs rather than primary lighting bulbs.
The 1445 uses a BA9s base, a miniature bayonet fitting with a 9mm collar. This base type is not interchangeable with screw-base or wedge-base bulbs without a socket adapter.
The single-filament construction of the 1445 means it serves one switching function only, with no dual-intensity capability such as that found in stop/tail bulbs.
Because the BA9s base is a specific physical format, substituting a replacement bulb requires matching both the base type and the 12V/2W electrical rating to maintain correct fitment and circuit load.