Freightliner MB Line Courtesy Bulb Size

The Freightliner MB Line courtesy light requires a bulb size of 105 for proper installation and function within the vehicle interior. Data for the specific component covers the range from 1995 through 1997.

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
1995-1997	105 (Cab Over Engine)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105

Other Locations

Additional Notes

The bulb 105 is an ANSI-standardized single-filament type rated at 12 volts and 13 watts, fitted with a BA15s bayonet base.
The BA15s base designation indicates a single-contact bayonet mount with a 15mm base width, which is not interchangeable with dual-contact bayonet variants such as the BA15d.
The 105 is a variant of the 1156 bulb. While the two share a BA15s base, they carry different wattage ratings, and substitution between them may affect circuit load and brightness.
The Freightliner MB Line uses the 105 bulb for the cab over engine courtesy application across the 1995-1997 model years.
The ANSI standardization of the 105 bulb means its specifications are consistent across manufacturers in the United States and Canada, making cross-brand physical compatibility predictable within that designation.