Dodge Coronet Map Light Bulb Size

The Dodge Coronet map light utilizes bulb sizes 562, 1895, 90, and 1004 depending on the specific version of the lighting component installed in the vehicle. Data for the lighting components covers the range from 1956 through 1976 for the various configurations listed in the records.

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
1972-1976	562
1971	1895
1965-1970	90
1957-1959	90
1956	1004

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004

Other Locations

Additional Notes

The Dodge Coronet map light uses four distinct bulb types across its model years: the 562, 1895, 90, and 1004, all of which conform to ANSI standards recognized in both the United States and Canada.
The 90 bulb is the most frequently specified type in the Dodge Coronet map light fitment data, covering the 1957-1970 model years as well as 1958 and 1959, making it the dominant bulb across the vehicle's production history.
The 90 bulb is a single-filament type with a BA15s bayonet base, rated at 12V and 13W. The BA15s designation indicates a single-contact bayonet fitting, which is not interchangeable with dual-contact bayonet bases.
The 562 festoon bulb is specified for the 1972-1976 Coronet. It measures 44mm in length and makes contact through end-caps rather than a bayonet or wedge base, requiring a holder designed specifically for festoon-style fitment.
The 562 operates at 12V and 12W, placing it in a similar wattage range to the 90 bulb, though the two use entirely different base types and are not interchangeable.
The 1895 bulb is specified solely for the 1971 Coronet. It is a T5 miniature wedge type rated at 12V and 0.9W, a substantially lower wattage than any other bulb in this fitment data, reflecting a different lamp assembly design for that model year.
The 1004 bulb is specified for the 1956 Dodge Coronet. It is a dual-filament type with a BAY15d bayonet base, rated at 12V with filaments drawing 21W and 5W respectively. The BAY15d base uses offset pins to prevent incorrect single-filament substitutions.
The 1004 is noted as a variant of the 1157 bulb. While the two share a dual-filament BAY15d base design, they are not confirmed as direct substitutes without verifying wattage and pin offset compatibility for the specific socket.
The transition from the 90 bulb in 1970 to the 1895 in 1971, and then to the 562 from 1972 onward, reflects changes in the map light assembly across those model years, as each bulb type requires a physically distinct socket or holder.
Because the 562 uses end-cap contacts, the 1895 uses a wedge base, the 90 uses a BA15s bayonet base, and the 1004 uses a BAY15d bayonet base, none of these four bulb types are mechanically interchangeable with one another.