Honda Motorcycle VFR700F Interceptor Turn Signal Bulb Size
Honda Motorcycle VFR700F Interceptor front turn signal bulbs use 1034 size while rear turn signal bulbs use P21W size. The replacement chart covers 1986 to 1987 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 VFR700F Interceptor uses two distinct bulb types across its front and rear turn signal positions for the 1986-1987 model years.
The front turn signal takes a 1034 bulb, which follows the ANSI standard used in the United States and Canada. It features a dual-filament design with a BAY15d bayonet base, operating at 12V with a 21/5W output.
The BAY15d base on the 1034 bulb has offset locating pins, which physically prevents it from being seated in a single-filament socket. This makes it mechanically incompatible with BA15s-based housings.
The dual-filament nature of the 1034 means it carries two separate wattage ratings: 21W for the higher-intensity filament and 5W for the lower-intensity filament, each serving a distinct circuit function.
The 1034 is a variant of the widely known 1157 bulb, sharing the same dual-filament BAY15d configuration, though specific electrical characteristics may differ slightly between the two.
The rear turn signal takes a P21W bulb, which follows the ECE standard used in Europe and worldwide markets. It is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W.
The BA15s base on the P21W uses a single locating pin, distinguishing it from the dual-offset-pin BAY15d base of the 1034. The two base types are not interchangeable despite their similar bayonet-style mounting.
Both the 1034 and P21W share a 21W rating on their primary or sole filament, meaning the turn signal circuit draws equivalent wattage at both the front and rear positions.
The split between ANSI-standard front bulbs and ECE-standard rear bulbs on the same vehicle reflects a mixed-specification fitment, where each position requires a bulb sourced from a different regulatory standard.