Nissan F10 Back Up Light Bulb Size

The Nissan F10 back up light utilizes 1156 and P21W bulb sizes according to the provided data. Information for the specific lighting components covers the period from 1976 through 1978.

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
1976-1978	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 1156 is the sole bulb type listed for the Nissan F10 back up light across the 1976-1978 model years.
The 1156 is an ANSI-standardized bulb, meaning its physical and electrical specifications are governed by a recognized North American standard shared across the United States and Canada.
As a single-filament bulb, the 1156 serves one dedicated function per socket, which is consistent with its application in a back up light rather than a combined stop/tail position.
The 1156 uses a BA15s bayonet base, a single-contact mount where the bulb is inserted and rotated to lock into place, distinguishing it from the dual-contact BA15d base found on some other automotive bulbs.
The 1156 operates at 12 volts and 21 watts, values typical of standard incandescent automotive lighting in vehicles of that era.
The BA15s base of the 1156 is not interchangeable with dual-contact bayonet bases, so substitution requires confirmation that the replacement bulb carries the same single-contact base configuration.