Ram C/V Map Light Bulb Size

The Ram C/V map light requires a PC579 bulb size for proper installation and function within the interior overhead lighting assembly. Data for the specified component covers the range from 2012 through 2015.

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
2012-2015	PC579

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb with printed circuit board socket. 12V.	PC579

Other Locations

Additional Notes

The Ram C/V uses the PC579 bulb for the map light across its 2012-2015 model years.
The PC579 is classified as a festoon bulb, meaning it is cylindrical in shape and makes contact at both flat ends rather than through a traditional pin or wedge base.
PC579 bulbs are built with a printed circuit board socket, which distinguishes them from standard festoon types and limits interchangeability with conventional festoon replacements.
The PC579 operates at 12 volts, consistent with standard automotive electrical systems.
The PC579 designation follows ANSI standards recognized in both the United States and Canada, indicating the bulb conforms to a defined set of electrical and physical specifications within those markets.