Dodge Spirit Back Up Light Bulb Size

The Dodge Spirit back up light bulb accommodates 3 distinct sizes: 1156, 921, and 3157, with each size corresponding to specific vehicle configurations. The replacement chart covers 1989 through 1995 production years and details bulb size specifications for each model year.

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
1995	1156
1994	921
1993	3157
1992	921
1991	3057
1989-1990	922

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3057
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	922

Other Locations

Additional Notes

The Dodge Spirit uses five distinct bulb sizes across its 1989-1995 model years for the back up light position: 1156, 921, 3157, 3057, and 922.
The 922 bulb is a T15 wedge type rated at 12V and 16W, and it appears in the Dodge Spirit for the 1989 and 1990 model years.
The 921 bulb shares the same T15 wedge form factor and 12V, 16W rating as the 922, and it is fitted to the 1992 and 1994 model years.
Although the 921 and 922 bulbs carry identical voltage and wattage ratings, they are separate ANSI designations and are not guaranteed to be interchangeable without confirming socket and physical fitment compatibility.
The 3057 bulb, used on the 1991 Dodge Spirit, is a dual-filament T25 wedge type rated at 12V with a 27W high filament and a 7W low filament.
The 3157 bulb, fitted to the 1993 model year, is also a dual-filament T25 wedge type with the same 12V, 27W/7W rating as the 3057, though the two carry different ANSI designations and are not necessarily interchangeable.
The presence of dual-filament bulbs such as the 3057 and 3157 in a back up light position is notable, as back up lights typically require only a single-filament function; the second filament in these bulbs would remain unused in that application.
The 1156 bulb, used on the 1995 model year, differs from all other bulbs in these specifications by using a BA15s bayonet base rather than a wedge base, making it physically incompatible with wedge-type sockets.
The 1156 is rated at 12V and 21W, giving it a higher wattage output than the T15 wedge bulbs used in earlier model years of the Dodge Spirit.
All five bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada.