Honda Motorcycle CB1000 Brake Bulb Size

The Honda Motorcycle CB1000 brake requires a 1157 bulb size for proper operation and visibility on the road. Data for the specified component covers the range from 1994 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
1994-1995	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

Other Locations

Additional Notes

The 1157 is the sole brake bulb type listed for the Honda Motorcycle CB1000, covering the 1994-1995 model years.
The 1157 is an ANSI-standard bulb recognized across the United States and Canada, meaning it conforms to a widely adopted North American specification rather than a proprietary or regional standard.
The 1157 is a dual-filament bulb, which allows it to serve two brightness levels within a single unit. In brake light applications, the lower 5W filament typically handles the running light function while the higher 21W filament activates under braking.
The 1157 uses a BAY15d bayonet base. The BAY15d designation indicates an offset dual-contact base, where the two pins are positioned at different heights to prevent incorrect insertion of a single-filament bulb into a dual-filament socket.
The 1157 operates at 12 volts, consistent with the standard electrical system voltage found in most production motorcycles of this era.
Because the BAY15d base is offset, a single-filament bulb sharing the same physical housing but with an aligned base, such as the 1156, is not a compatible substitute despite superficial similarities in appearance.