Mazda RX-2 License Plate Bulb Size

The Mazda RX-2 license plate light requires a bulb size of 89 for the rear exterior lighting system. Data for the specified vehicle covers the range from 1973 to 1974.

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
1973-1974	89

Bulb Specifications

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

Other Locations

Additional Notes

The Mazda RX-2 uses the 89 bulb for the license plate position across the 1973-1974 model years.
The 89 is an ANSI-standardized bulb type recognized in both the United States and Canada.
It operates on a 12-volt electrical system and draws 13 watts.
The 89 uses a BA15s bayonet base, which is a single-contact fitting with a 15mm base width.
The 89 is a single-filament bulb, meaning it serves one lighting function rather than combining two, such as stop and tail.
The 89 is a lower wattage variant of the 1156 bulb. While both share the BA15s base, the difference in wattage means the two are not directly interchangeable in applications where electrical load is a factor.