Dodge Dart Map Light Bulb Size

The Dodge Dart map light utilizes bulb sizes 12961, 89, 1895, 90, and 1004 depending on the specific version of the vehicle. Available data covers the range from 1960 through 2016 for the components listed.

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
2013-2016	12961
1976	89
1971	1895
1969-1970	89
1965-1968	90
1960-1964	1004

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89
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 12961 is a Philips-designated miniature wedge bulb in the T10 form factor, using a W2.1x9.5d base and rated at 12V and 5W. The Dodge Dart (2013-2016) uses this bulb for the map light.
The W2.1x9.5d base on the 12961 is a wedge-type connection, meaning the bulb is held in place by tension from the socket rather than a locking bayonet mechanism.
Bulbs 89 and 90 share the same BA15s single-contact bayonet base and identical 12V, 13W ratings, making them physically and electrically similar. The Dart used the 90 for model years 1965-1968 and the 89 for 1969-1970 and 1976.
Despite the close similarity between the 89 and 90, they carry distinct ANSI designations. Substituting one for the other without confirming socket fitment is not advised, as minor dimensional differences in the base or bulb envelope may affect fit.
The 1004 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21W/5W filament split. The Dart used this bulb for map lighting across model years 1960-1964.
The BAY15d base on the 1004 features offset pins, which prevent it from being inserted into a BA15s single-contact socket. This makes the 1004 incompatible with sockets designed for the 89 or 90.
The 1004 is noted as a variant of the 1157. The 1157 is a widely available dual-filament bulb, though direct substitution depends on whether the socket accepts the BAY15d base configuration.
The 1895 is a T5 miniature wedge bulb rated at 12V and 0.9W, representing the lowest wattage bulb across all listed map light specifications. The Dart used this bulb for the 1971 model year.
The T5 wedge form factor of the 1895 is physically smaller than the T10 wedge used by the 12961. The two are not interchangeable despite both using wedge-type bases.
Across the full range of listed model years, the Dodge Dart map light specifications reference five distinct bulb types spanning three different base configurations: wedge (W2.1x9.5d), single-contact bayonet (BA15s), and dual-contact bayonet (BAY15d).