Nissan Pulsar NX Back Up Light Bulb Size

The Nissan Pulsar NX back up light utilizes 1156 and P21W bulb sizes for the rear illumination system. Data for the specified lighting components covers the range from 1983 to 1990.

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
1983-1990	1156

Bulb Specifications

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

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Additional Notes

The Nissan Pulsar NX uses the 1156 bulb for the back up light across all listed model years, spanning 1983-1990.
The 1156 is an ANSI-standardized bulb, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 1156 is a single-filament bulb, which distinguishes it from dual-filament variants such as the 1157, and means it serves only one lighting function per socket.
The bulb operates at 12 volts and 21 watts, consistent with standard automotive electrical systems of that era.
The 1156 uses a BA15s bayonet base, where "BA15s" denotes a bayonet fitting with a 15mm base width and a single contact pin at the base.
The BA15s single-contact base is not interchangeable with the BA15d double-contact base used on dual-filament bulbs, and substitution between these base types is not possible without a socket adapter.