The Yamaha FJ1100 front and rear turn signal bulbs both utilize a 1156 bulb size for replacement applications. The replacement chart covers 1984 to 1985 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 1156 is the sole bulb type specified for the Yamaha FJ1100, appearing across all listed positions and model years.
The 1156 is an ANSI-standard single-filament bulb rated at 12 volts and 21 watts, fitted with a BA15s bayonet base.
The BA15s bayonet base uses a single contact pin, which distinguishes it from the dual-pin BA15d base found on double-filament bulbs. The two base types are not interchangeable.
The FJ1100 uses the 1156 for both front and rear turn signals across the 1984-1985 model years, meaning a single bulb type serves all four turn signal positions on the motorcycle.
The 1156 designation follows ANSI standardization applicable to the United States and Canada, indicating the bulb conforms to a defined set of electrical and physical specifications within those markets.
At 21 watts on a 12-volt system, the 1156 draws approximately 1.75 amperes per bulb, a figure relevant when assessing load on the turn signal circuit or evaluating compatibility with aftermarket flasher relays.
Single-filament construction means the 1156 serves one switching function only, which is consistent with its use in dedicated turn signal housings rather than combination stop and turn assemblies.