Freightliner Coronado Map Light Bulb Size

The Freightliner Coronado map light requires a 912 bulb size for proper installation and function within the interior overhead lighting assembly. Available data for the specified bulb covers the production range from 2012 through 2018.

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	US Type	EU Type	Shop
2012-2018	912	W16W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912	Check Price

Other Locations

Additional Notes

The 912 bulb is the sole map light bulb size specified for the Freightliner Coronado across the 2012-2018 model years.
The 912 follows the ANSI standardization system used in the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications recognized across North American markets.
It is a T15 wedge-type bulb, a form factor in which the base tapers to a flat, wedge-shaped pin that inserts directly into a socket without a separate metal base or locking mechanism.
The 912 operates at 12 volts and consumes 12 watts, placing it in the low-wattage range typical of interior courtesy and reading applications.
The 912 is a variant of the 921 bulb. These two types share the same T15 wedge base and 12-volt operating voltage, but the 921 is rated at 18 watts, making the 912 the lower-wattage of the two.
Because the 912 and 921 share the same physical base, the 921 is sometimes used as a substitute; however, the higher wattage of the 921 draws more current than the socket and wiring of the Freightliner Coronado map light position were specified to accommodate.