Dodge Challenger Map Light Bulb Size

The Dodge Challenger map light utilizes bulb sizes 578, 89, and 562 depending on the specific production era for the interior illumination components. Available data covers the range from 1970 through 2023 for the various configurations listed in the provided 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
2023	578
2008-2021	578
1973-1974	89
1970-1972	562

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V, 12W.	578
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562

Other Locations

Additional Notes

The Dodge Challenger map light uses the 578 bulb across the 2008-2023 model years, making it the dominant fitment in these specifications by a wide margin.
The 578 is a festoon-type bulb, meaning it is cylindrical in form and makes electrical contact through metal caps at each end rather than through a base socket.
Festoon bulbs are held in place by spring-loaded clips in the housing, and the 578 sits at 41mm in length at 12V and 12W.
The 1970-1972 Dodge Challenger map light uses the 562 bulb, which is also a festoon type with end-cap contacts, operating at 12V and 12W.
Although the 578 and 562 share the same festoon contact style and identical voltage and wattage ratings, they are not interchangeable due to their differing lengths, 41mm for the 578 and 44mm for the 562.
The 1973-1974 Dodge Challenger map light uses the 89 bulb, which represents a different bulb format entirely, featuring a BA15s bayonet base rather than festoon end-cap contacts.
The BA15s bayonet base of the 89 bulb uses a single locating pin, distinguishing it from dual-pin bayonet variants and making it incompatible with sockets designed for those types.
The 89 bulb is a single-filament design rated at 12V and 13W, and it is described as a lower wattage variant of the 1156 bulb, sharing the same base style but drawing less power.
All three bulb types across these specifications, the 578, 562, and 89, conform to ANSI standards applicable in both the United States and Canada.
The three distinct bulb types across these model years are not cross-compatible with one another, as they differ in both physical format and socket type.