Honda Motorcycle VT600CD Shadow VLX Deluxe Turn Signal Bulb Size
Honda Motorcycle VT600CD Shadow VLX Deluxe front turn signal bulbs measure 1034 in size, while rear turn signal bulbs measure P21W or 1073, with these bulb sizes specified for replacement applications. The replacement chart covers vehicle production spanning 1993 to 1995.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1034 bulb is an ANSI-standard dual-filament bulb rated at 12V and 21/5W, fitted with a BAY15d bayonet base. Its dual-filament design means it serves two lighting functions within a single housing, with the higher wattage filament handling the brighter signal flash and the lower wattage filament serving a secondary role.
The Honda Motorcycle VT600CD Shadow VLX Deluxe uses the 1034 bulb in the front turn signal position for both the 1993 and 1995 model years.
The 1034 is described as a variant of the 1157, which is one of the most widely used dual-filament automotive bulbs in North American applications. This relationship indicates a close electrical and physical similarity between the two types, though they are not confirmed as interchangeable within these specifications.
The rear turn signal position does not use a consistent bulb type across the two listed model years. The 1993 model uses the 1073, while the 1995 model uses the P21W.
The P21W is an ECE-standard single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base. The ECE standard is used across Europe and many international markets, distinguishing it from the ANSI-standard bulbs used in North American applications.
The 1073 is an ANSI-standard single-filament bulb rated at 12V and 13W, also fitted with a BA15s bayonet base. It is described as a lower wattage variant of the 1156, a common single-filament bulb in North American automotive use.
Although the P21W and the 1073 share the same BA15s bayonet base, their wattage ratings differ significantly, at 21W and 13W respectively. This difference means the two bulb types are not electrically equivalent and are not interchangeable despite the shared base type.
The BAY15d base on the 1034 is physically distinct from the BA15s base on both the P21W and the 1073. The BAY15d base features offset locating pins to accommodate its dual-filament design, while the BA15s base uses a single pin configuration suited to single-filament bulbs.