Plymouth Barracuda Map Light Bulb Size

The Plymouth Barracuda map light utilizes bulb sizes 89, 90, and 1895 depending on the specific version of the vehicle. Data for the lighting components covers the range from 1964 to 1974.

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
1972-1974	89
1971	1895
1969-1970	89
1964-1968	90

Bulb Specifications

Description	Bulb Size
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

Other Locations

Additional Notes

The Plymouth Barracuda map light specifications span model years 1964 through 1974, covering the full production run of the nameplate.
Two bulb types account for all entries across these model years: the ANSI 89 and ANSI 90, both of which share the BA15s bayonet base and operate at 12V, 13W with a single filament.
The BA15s bayonet base is a single-contact design, distinguishing it from the dual-contact BA15d base found on some other automotive applications.
The Plymouth Barracuda used the ANSI 90 bulb for map light fitment across the 1964-1968 model years.
The ANSI 89 bulb replaced the 90 as the specified map light fitment from 1969 onward, covering 1969-1970 and 1972-1974.
Although the 89 and 90 share the same BA15s base and 12V, 13W rating, they are distinct ANSI part numbers and are not confirmed as interchangeable within these specifications.
The 89 is described as a lower wattage variant of the ANSI 1156, which itself is a widely used BA15s single-filament bulb rated at a higher wattage, making the 89 a reduced-output alternative within the same base family.
The 1971 Plymouth Barracuda is the sole model year in these specifications to use the ANSI 1895, a T5 miniature wedge bulb rated at 12V and 0.9W, which represents a substantially lower power draw than the 89 or 90.
The T5 wedge base of the 1895 is physically incompatible with the BA15s bayonet socket used in all other listed model years, meaning the 1971 fitment is not interchangeable with any adjacent year.
All three bulb types listed carry ANSI standardization applicable to both the United States and Canada.