Dodge Dynasty Back Up Light Bulb Size

The Dodge Dynasty back up light bulb uses a 3157 or 3057 size, with specifications varying across model generations. The replacement chart covers 1988 to 1993 production years and details bulb size requirements for each vehicle 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
1992-1993	3157
1988-1991	3057

Bulb Specifications

Description	Bulb Size
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

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Additional Notes

The Dodge Dynasty backup light specifications cover the 1988-1993 model years, with two distinct bulb sizes used across that span.
The 3057 bulb was used in the Dodge Dynasty from 1988-1991, while the 3157 replaced it for the 1992-1993 model years.
Both the 3057 and 3157 are ANSI-standardized bulbs recognized in the United States and Canada, meaning they conform to a defined set of electrical and physical standards rather than being proprietary specifications.
Each bulb operates on a 12-volt system and carries a dual-wattage rating of 27W and 7W, corresponding to its two filaments, one for higher-intensity output and one for lower-intensity output.
Both bulbs belong to the T25 wedge form factor, a designation that describes the physical shape and base style used to seat the bulb within its socket.
Although the 3057 and 3157 share the same T25 wedge base, voltage rating, and wattage values, they are distinct part numbers and are not confirmed as interchangeable within these specifications.
The shift from the 3057 to the 3157 between the 1991 and 1992 model years represents a change in bulb specification despite the two types sharing identical electrical ratings on paper.