The Yamaha TW200 front turn signal requires a 1157 bulb size while the rear turn signal uses a 1156 bulb size. The replacement chart covers 2002 through 2021 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 Yamaha TW200 uses two distinct turn signal bulb types across its front and rear positions: the 1157 for the front and the 1156 for the rear, covering model years 2002-2021 for both positions.
The 1157 is a dual-filament bulb, meaning it carries two separate filaments within a single envelope, operating at 21W on the primary filament and 5W on the secondary filament, at 12 volts.
The 1156 is a single-filament bulb rated at 21W and 12 volts, making it a simpler construction than the 1157 despite sharing a similar physical form factor.
Both the 1157 and 1156 are classified under ANSI standards and are recognized in the US and Canadian markets.
The 1157 uses a BAY15d bayonet base, which is an offset dual-pin configuration designed to prevent incorrect installation by ensuring the bulb can only be seated in one orientation.
The 1156 uses a BA15s bayonet base, a single-pin configuration that differs structurally from the BAY15d base of the 1157, making the two bulbs physically non-interchangeable despite their similar appearance.
Because the 1157 and 1156 share a similar overall shape but have different base pin configurations and filament counts, substituting one for the other is not possible without a socket adapter or wiring modification.
The dual-filament nature of the 1157 in the Yamaha TW200 front turn signal position suggests the socket is wired to support two independent circuits, typically serving both a turn signal function and a running or parking light function.