Dodge 400 License Plate Bulb Size

The Dodge 400 license plate light requires a 168 bulb size for proper illumination of the rear registration area. Data for the specified lighting component covers the 1982 to 1983 range.

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
1982-1983	168

Bulb Specifications

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

Other Locations

Additional Notes

The T10 miniature wedge is the bulb type used for the license plate position on the Dodge 400, covering the 1982-1983 model years.
The T10 designation refers to a tubular glass envelope with a width of 10 eighths of an inch, fitted with a wedge base that connects directly into a socket without a separate metal base or pins.
The 168 bulb operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of illumination bulbs rather than signaling bulbs.
The 168 is an ANSI-standardized type recognized in both the United States and Canada, meaning the specification follows a shared North American standard rather than a manufacturer-specific designation.
The wedge base format of the T10 means the glass envelope itself acts as the retention mechanism within the socket, and the bulb is removed by pulling straight out rather than by turning.
The 168 bulb type is shared across both model years listed for the Dodge 400, indicating no change in the license plate bulb specification between 1982 and 1983.