Honda Motorcycle GL1500C/CD Valkyrie Turn Signal Bulb Size
Honda Motorcycle GL1500C/CD Valkyrie front turn signal bulbs measure P21/5W or 1034 in size, while rear turn signal bulbs measure P21W or 1073 in size. The replacement chart covers 1997 to 2003 model 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 GL1500C/CD Valkyrie front turn signal position uses two distinct bulb types across its production years: the P21/5W for 2000-2003 and the 1034 for 1997-1999.
The P21/5W is an ECE-standard dual-filament bulb rated at 12V with a 21W main filament and a 5W secondary filament, fitted with a BAY15d bayonet base.
The 1034 is an ANSI-standard dual-filament bulb sharing the same BAY15d bayonet base and 12V, 21W/5W rating as the P21/5W, and is classified as a variant of the 1157.
Because the P21/5W and 1034 share the BAY15d base and identical wattage ratings, their physical and electrical compatibility is closely related, though they originate from different regional standards.
The rear turn signal position on the GL1500C/CD Valkyrie uses the P21W for 2000-2003, a single-filament ECE-standard bulb rated at 12V, 21W, with a BA15s bayonet base.
The rear turn signal for the 1999 model year uses the 1073, an ANSI-standard single-filament bulb with a BA15s base rated at 12V and 13W, which is a lower wattage variant of the 1156.
The 1073 and P21W both use the BA15s bayonet base, but their wattage ratings differ: the 1073 draws 13W while the P21W draws 21W, making them non-equivalent substitutes despite the shared base type.
The rear turn signal for 1997-1998 uses the P21W, while the front uses the 1034 for those same years, meaning the front and rear positions on those model years draw from different regional standards simultaneously.
The front turn signal bulb across all listed years is dual-filament, while the rear turn signal bulb across all listed years is single-filament, reflecting a functional distinction between the two positions.
The shift from ANSI-standard bulbs to ECE-standard bulbs in the front turn signal position occurs between the 1999 and 2000 model years of the GL1500C/CD Valkyrie.