Dodge Ram 3500 License Plate Bulb Size

The Dodge Ram 3500 license plate light uses 194 and 168 bulb sizes depending on the specific version of the vehicle. Available data covers the range from 1994 through 2010 for the components listed in the provided specifications.

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
2010	194
1994-2009	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Dodge Ram 3500 uses two bulb sizes for the license plate position across its model years: the 194 and the 168.
Both the 194 and the 168 are ANSI-standardized miniature wedge bulbs of the T10 form factor, rated for 12-volt automotive electrical systems.
Although the 194 and 168 share the same T10 wedge form factor, they are not electrically identical. The 168 draws 4.9 watts, while the 194 draws 3.78 watts, meaning the two bulbs differ in power consumption.
The shared T10 physical form factor between the 194 and 168 means either bulb may physically fit the same socket, but substituting one for the other results in a different wattage draw than the vehicle's original specification.
The Dodge Ram 3500 (1994-2009) specifies the 168 bulb for the license plate position, making it the predominant bulb size across the listed model year range.
The 2010 Dodge Ram 3500 specifies the 194 bulb for the license plate position, which differs from the 168 specified in prior model years.