Honda Motorcycle NPS50S Ruckus Turn Signal Bulb Size
Honda Motorcycle NPS50S Ruckus front and rear turn signal bulbs use a P21W size, also designated as 1073. The replacement chart covers 2004 through 2009 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.
The Honda Motorcycle NPS50S Ruckus uses two distinct turn signal bulb types across its production years: the P21W and the 1073, both sharing a BA15s bayonet base.
The P21W is an ECE-standard bulb used in Europe and worldwide markets. It operates at 12V with a 21W output and uses a single-filament design with a BA15s bayonet base.
The 1073 is an ANSI-standard bulb used in US and Canadian markets. It operates at 12V with a 13W output and also uses a single-filament design with a BA15s bayonet base.
Although the P21W and 1073 share the same BA15s bayonet base, their wattage ratings differ significantly, at 21W and 13W respectively, which makes them non-interchangeable without accounting for the electrical load difference.
The 1073 is classified as a lower wattage variant of the 1156 bulb. The 1156 is a widely used ANSI single-filament bulb, also with a BA15s base, rated at 12V and 26.88W.
The Honda Motorcycle NPS50S Ruckus uses the P21W for both front and rear turn signals across the 2004-2006 and 2008-2009 model years.
The 2007 model year is the sole exception, specifying the 1073 bulb for both front and rear turn signal positions.
The front and rear turn signal positions share identical bulb specifications for every model year listed, meaning no positional difference exists between front and rear fitment on this model.