Isuzu Pickup License Plate Bulb Size

The Isuzu Pickup license plate light uses bulb sizes 168 and 89 depending on the specific version of the vehicle. Data for the lighting components covers the range from 1981 to 1995.

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
1984-1995	168
1981-1983	89

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89

Other Locations

Additional Notes

The Isuzu Pickup uses two distinct bulb types across its license plate bulb specifications: the 168 and the 89, each with different base types and wattage ratings.
The 168 bulb is a T10 miniature wedge type rated at 12V and 4.9W, conforming to ANSI standards applicable in both the US and Canada.
The 89 bulb is a single-filament type with a BA15s bayonet base, rated at 12V and 13W, and is classified as a lower wattage variant of the 1156 bulb under the same ANSI standard.
The BA15s bayonet base of the 89 bulb and the wedge base of the 168 bulb are physically incompatible, meaning the two types are not interchangeable despite both operating at 12V.
The 168 bulb draws only 4.9W, while the 89 draws 13W, representing a significant difference in power consumption between the two fitments used across the model's production years.
The Isuzu Pickup (1984-1995) specifies the 168 bulb for the license plate position, accounting for twelve of the fifteen model years covered in the specifications.
The 1981-1983 model years specify the 89 bulb, indicating a change in the license plate bulb fitment occurred between the 1983 and 1984 model years.