Honda Motorcycle CB650SC Nighthawk Turn Signal Bulb Size

Honda Motorcycle CB650SC Nighthawk front turn signal bulbs use 1034 size while rear turn signal bulbs use P21W or 1073 size. The replacement chart covers 1982 to 1985 production years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

YearsBulb Size
1982-19851034

Rear Turn Signal

YearsBulb Size
1985P21W
19841073
1982-1983P21W

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.1034
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.P21W
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.1073

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