The Dodge B1500 brake light requires bulb size 2458 or 3157 depending on the specific configuration of the lighting assembly. Data for the lighting components covers the range from 1995 through 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Dodge B1500 uses the 3157 bulb for the brake lights across the 1995-1998 model years.
The 3157 is a dual-filament T25 wedge bulb rated at 12V with a 27W/7W output, where the higher wattage filament serves the brake function and the lower wattage filament serves a secondary function such as running lights.
The 3157 conforms to ANSI standards applicable in both the United States and Canada.
The center high mount stop light on the Dodge B1500 does not use a consistent bulb size across the 1995-1998 model years, with three different bulb sizes specified depending on the year.
The 912 bulb is specified for the center high mount stop light on the 1995-1996 B1500, while the 922 applies to the 1997 model and the 921 applies to the 1998 model.
The 921, 922, and 912 are all T15 wedge bulbs operating at 12V, conforming to ANSI standards for the US and Canadian markets.
The 912 is a variant of the 921 but is rated at 12W, whereas both the 921 and 922 are rated at 16W, making the 912 a lower-output bulb despite sharing the same T15 form factor.
Because the 912 and 921 differ in wattage output, substituting one for the other in the center high mount stop light position carries a risk of non-compliance with original equipment output levels.