Freightliner FL106 Back Up Light Bulb Size

The Freightliner FL106 back up light utilizes 1156 and P21W bulb sizes for various applications across the production history. Data for the specified components covers the range from 1994 through 2003.

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
1994-2003	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The Freightliner FL106 uses the 1156 bulb for its back up light across all listed model years, spanning 1994-2003.
The 1156 is an ANSI-standardized bulb type recognized across the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared by all compliant manufacturers.
The 1156 operates on a 12-volt electrical system and draws 21 watts, which is consistent with standard incandescent automotive reverse lighting applications.
The bulb uses a BA15s bayonet base, a single-contact fitting where the "s" denotes a single pin, as opposed to the dual-pin BA15d base found on double-filament bulbs.
The 1156 is a single-filament bulb, meaning it serves one lighting function only, which in this application is the reverse light.
The single-filament BA15s base of the 1156 is not interchangeable with visually similar bayonet bulbs that carry a dual-filament design, such as the 1157, despite sharing the same base shell width.