The Buell S1 Lightning uses 232 and 5008 bulb sizes for both front and rear turn signal applications. The replacement chart covers 1996 to 1998 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 Buell S1 Lightning uses two distinct bulb types across its 1996-1998 model years: the 232 and the 5008, both of which are ANSI-standard bulbs rated for use in the US and Canada.
The 232 bulb is a festoon-style unit with an SV8.5 base, operating at 12V and drawing 3W. Festoon bulbs are cylindrical in form and mount by pressing their end caps into spring clips rather than inserting into a socket.
The 5008 bulb uses a BA15s single-contact bayonet base and operates at 12V. It is a single-filament bulb and is considered a lower-wattage variant of the 1156.
The 1997-1998 S1 Lightning uses the 232 bulb for both the front and rear turn signals, while the 1996 model uses the 5008 for both positions.
Because the 232 and 5008 use entirely different base types, an SV8.5 festoon mount versus a BA15s bayonet socket, the two bulbs are not interchangeable with each other.
The front and rear turn signal positions share the same bulb specification within each model year, meaning the 1996 model takes the same 5008 bulb at all four turn signal positions, and the 1997-1998 models take the same 232 bulb at all four positions.