Oldsmobile Super 88 Dome Light Bulb Size

The Oldsmobile Super 88 dome light utilizes a 1004 bulb size for interior illumination across various production periods. Available data for the specified component covers the span from 1953 through 1964.

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
1953-1964	1004

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004

Other Locations

Additional Notes

The Oldsmobile Super 88 dome light uses the 1004 bulb across all listed model years, spanning 1953-1964.
The 1004 is an ANSI-standardized bulb type, meaning its physical and electrical specifications are defined by a recognized North American industry standard applicable in both the United States and Canada.
The 1004 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, each serving a distinct function.
The 1004 uses a BAY15d bayonet base, a two-pin offset bayonet mount where the two pins are positioned at different heights to ensure correct polarity orientation during installation.
The 1004 operates at 12 volts, consistent with the 12-volt electrical systems standard in passenger vehicles of this era.
The 1004 carries a 21/5W dual-wattage rating, corresponding to its two filaments, with the higher wattage filament producing greater output than the lower wattage filament.
The 1004 is described as a variant of the 1157, a widely used automotive bulb. While the two share the same BAY15d base and general form, they are not electrically identical, and substitution between them warrants verification of voltage and wattage compatibility for the specific application.