Chevrolet Citation Engine Compartment Light Bulb Size

The Chevrolet Citation engine compartment light requires a 93 or 1156 bulb size for proper illumination. The replacement chart covers 1980 to 1983 vehicle production years with corresponding bulb specifications.

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	93
1981-1982	1156
1980	93

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	93
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

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Additional Notes

The Chevrolet Citation engine compartment light uses two distinct bulb types across its 1980-1983 model years: the 93 and the 1156.
Both the 93 and 1156 are ANSI-standardized bulbs recognized in the US and Canada, and both use the BA15s single-contact bayonet base.
The shared BA15s base means the 93 and 1156 are physically interchangeable in terms of socket fitment, though they differ in wattage output.
The 1156 operates at 12V and draws 21W, while the 93 operates at 12V and draws 13W, making the 93 a lower-wattage variant of the 1156.
Despite the physical interchangeability of the BA15s base, substituting a 1156 for a 93 introduces a higher wattage draw than the original specification calls for in the 1980 and 1983 model years.
Both bulbs are single-filament types, which is consistent with a non-switching application such as an engine compartment light that operates in an on/off state only.
The 1156 is specified for the 1981-1982 Citation, while the 93 is specified for the 1980 and 1983 model years.