Honda Motorcycle PC800 Pacific Coast Turn Signal Bulb Size
Honda Motorcycle PC800 Pacific Coast front turn signal bulbs measure 1034 in size, while rear turn signal bulbs measure 1073 or P21W, with replacement specifications detailed in the chart. The chart covers bulb data spanning 1989 to 1998 for this motorcycle model.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Motorcycle PC800 Pacific Coast uses two bulb types across its front and rear turn signal positions: the 1034 for all front turn signal applications and either the 1073 or P21W for the rear, depending on the model year.
The 1034 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 carries two separate circuits within a single envelope, typically serving both a brighter signalling function and a dimmer running or parking function simultaneously.
The 1034 is classified as a variant of the 1157, sharing the same BAY15d base and general electrical characteristics. The BAY15d base features two offset pins at different heights, which prevents incorrect single-filament bulbs from being inserted into a dual-filament socket.
The 1034 is the specified front turn signal bulb for the Honda Motorcycle PC800 Pacific Coast across all listed model years, spanning 1989-1990 and 1994-1998.
The rear turn signal position on the PC800 Pacific Coast uses two distinct bulb standards across its production years, with the 1073 fitted in 1995-1996 and 1998, and the P21W fitted in 1989-1990, 1994, and 1997.
The 1073 is an ANSI-standard single-filament bulb rated at 12V and 13W, using a BA15s bayonet base. It is a lower-wattage variant of the 1156, which is typically rated at 21W. The reduced wattage of the 1073 results in a lower light output compared to the 1156.
The P21W is an ECE-standard single-filament bulb rated at 12V and 21W, also using a BA15s bayonet base. ECE standards are applied broadly across European and international markets, whereas ANSI standards are specific to the United States and Canada.
Although the 1073 and P21W share the same BA15s bayonet base, their wattage ratings differ substantially, at 13W and 21W respectively. Substituting one for the other may affect turn signal flash rate, brightness, and compatibility with the motorcycle's flasher relay, which is typically calibrated to a specific load.
The front and rear turn signal sockets on the PC800 Pacific Coast are not interchangeable. The front socket accepts the BAY15d dual-filament base of the 1034, while the rear socket accepts the BA15s single-filament base of either the 1073 or P21W. The physical pin configurations of BAY15d and BA15s are different, preventing cross-position installation.
The coexistence of ANSI-standard bulbs (1034 and 1073) and an ECE-standard bulb (P21W) within the same model's production history reflects regional market variation in the PC800 Pacific Coast's components across different model years.