Chevrolet Chevelle Map Light Bulb Size

The Chevrolet Chevelle map light utilizes a 562 bulb size for interior illumination within the cabin area. Data for the specific component covers the range from 1964 to 1971.

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
1971	562
1964-1968	562

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562

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Additional Notes

The 562 is the sole map light bulb size listed across all model years in the Chevrolet Chevelle specifications, covering 1964-1968 and 1971.
The 562 bulb follows the ANSI standard recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical criteria shared across North American markets.
The 562 is a festoon-type bulb, a form factor characterized by a cylindrical tube with metal end caps at each terminal rather than a screw base or bayonet pin.
The festoon body of the 562 measures 44mm in length, which determines physical fit within the map light housing and must be matched when sourcing a replacement.
Electrical contact is made through end-cap contacts at both ends of the bulb, a design that requires a spring-loaded or clip-style socket rather than a rotational or push-in mount.
The 562 operates at 12 volts, consistent with the standard automotive electrical system voltage used in passenger vehicles of this era.
The bulb carries a 12-watt rating, which reflects its power draw and determines the heat output and brightness level produced during operation.
Because the 562 specification remains unchanged across every listed year, any replacement bulb must match the 44mm festoon format and 12V/12W ratings to ensure correct fitment and circuit compatibility.