Dodge Monaco Map Light Bulb Size

The Dodge Monaco map light utilizes bulb sizes 89, 90, 562, 906, 1004, and 1895. Available information covers the span from 1965 through 1992 for the specified lighting components.

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
1990-1992	906
1974-1978	562
1971	1895
1969-1970	90
1968	89
1967	90
1965-1966	1004

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
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). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004

Other Locations

Additional Notes

The Dodge Monaco map light uses three distinct bulb types across its 1965-1992 production span, with the 906, 562, and several bayonet-base variants each serving different model years.
The 906 is a T10 miniature wedge bulb rated at 12V and 8W, and it fits the Dodge Monaco map light for the 1990-1992 model years.
The 562 is a 44mm festoon bulb with end-cap contacts rated at 12V and 12W, and it serves the Monaco across the 1974-1978 model years. Festoon bulbs make contact at both ends rather than through a base, which distinguishes them from wedge and bayonet types.
The 906 and 562 are not interchangeable despite both operating at 12V, as they differ in physical form factor, wattage, and contact type.
The 1895 is a T5 miniature wedge bulb rated at 12V and 0.9W, assigned solely to the 1971 model year. At 0.9W, it draws considerably less power than any other bulb type listed in these specifications.
The 90 bulb is a single-filament type with a BA15s bayonet base rated at 12V and 13W, and it fits the 1967, 1969, and 1970 model years.
The 89 bulb shares the BA15s bayonet base and the same 12V, 13W rating as the 90, and it is the specified fitment for the 1968 model year. Although it is described as a lower-wattage variant of the 1156, its rated wattage in these specifications matches that of the 90.
The 1004 is a dual-filament bulb with a BAY15d bayonet base rated at 12V and 21/5W, and it is specified for the 1965-1966 model years. The BAY15d base has offset pins to prevent incorrect installation, which distinguishes it from the single-filament BA15s base used by the 89 and 90 bulbs.
The BA15s base of the 89 and 90 bulbs and the BAY15d base of the 1004 are physically incompatible, and substituting one for the other is not possible without modification to the socket.
All bulb types listed in these specifications conform to ANSI standards applicable in both the United States and Canada.