Honda Motorcycle CB250 Nighthawk Instrument Panel Bulb Size

The Honda Motorcycle CB250 Nighthawk instrument panel requires a bulb size of 158 for proper illumination of the gauges. Data for the specified component covers the range from 2001 to 2008.

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
2001-2008	158

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.	158

Other Locations

Additional Notes

The Honda Motorcycle CB250 Nighthawk uses the 158 bulb for its instrument panel across the 2001-2008 model years.
The 158 is classified as a miniature wedge bulb under the T10 form factor, which refers to a tubular glass envelope roughly 10/8 of an inch wide.
The 158 operates at 12 volts and draws 3 watts, placing it in the low-power range typical of instrument illumination applications.
The 158 is an ANSI-standardized bulb, meaning its physical and electrical characteristics conform to a defined North American specification recognized in both the United States and Canada.
The wedge base design of the T10 means the bulb is held in its socket by the tension of the glass pinch at its base rather than by a separate metal cap, which is a common trait in instrument cluster applications.
Because the 158 is an ANSI standard type, it is generally interchangeable with other bulbs sharing the same T10 wedge base, 12V rating, and 3W rating, provided those substitutes also conform to the 158 specification.