Ram 2500 License Plate Bulb Size

The Ram 2500 license plate light requires a 194 bulb size for proper installation and function within the rear housing. Available data covers the specific time range from 2011 through 2020 for the listed vehicle.

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
2011-2020	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Ram 2500 uses the 194 bulb size for the license plate position across the 2011-2020 model years.
The 194 bulb is a T10 miniature wedge type, which refers to its wedge-shaped base that holds the bulb in place without a separate metal connector or socket pins.
This bulb operates at 12 volts and draws 3.78 watts, placing it in the low-wattage range typical of illumination and indicator applications.
The 194 designation follows ANSI standards recognized in both the United States and Canada, meaning the specification reflects a standardized bulb code rather than a proprietary one.
Because the T10 wedge base is a widely standardized form factor, multiple manufacturers produce bulbs that share this fitment, including incandescent and LED variants built to the same base type.
The consistent use of the 194 bulb across all ten listed model years of the Ram 2500 indicates that the license plate lamp housing design remained unchanged throughout that period.