Plymouth Road Runner Map Light Bulb Size

The Plymouth Road Runner map light requires bulb sizes 562, 1895, or 90 depending on the specific application. Available data for the bulb sizes covers the range from 1968 to 1975.

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
1972-1975	562
1971	1895
1968-1970	90

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

Other Locations

Additional Notes

The Plymouth Road Runner map light bulb specifications span model years 1968 through 1975, covering three distinct bulb types across that range.
The 562 is the most frequently specified bulb in these records, appearing in the 1972-1975 Road Runner. It is a festoon-style bulb measuring 44mm in length with end-cap contacts, rated at 12V and 12W under the ANSI standard.
Festoon bulbs make contact at both ends of the housing rather than through a base socket, which means orientation during installation does not affect polarity.
The 1968-1970 Road Runner uses the 90 bulb, a single-filament type with a BA15s bayonet base rated at 12V and 13W. The BA15s designation indicates a single-pin bayonet fitting with a 15mm base width.
The 1971 Road Runner uses the 1895 bulb, a T5 miniature wedge type rated at 12V and 0.9W. At 0.9W, it draws considerably less power than either the 562 or the 90 bulb.
Each of the three bulb types carries a different base design: end-cap festoon (562), bayonet (90), and wedge (1895). These base types are not interchangeable with one another.
All three bulb types conform to ANSI standards applicable in both the United States and Canada.
The 1971 model year represents a standalone specification, as it is the only year in these records assigned the 1895 bulb.