The Ducati 999R front turn signal requires a 906 bulb size, while rear turn signals use 5008 and 232 bulb sizes. The replacement chart covers 2003 to 2006 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 Ducati 999R uses three distinct bulb types across its turn signal positions: the 906, 5008, and 232, all conforming to ANSI standards applicable in the US and Canada.
The 906 is a miniature wedge bulb of the T10 form factor, rated at 12V and 8W. It serves as the front turn signal bulb across all four model years covered by the specifications (2003-2006).
The T10 wedge base of the 906 is a push-fit design, meaning it requires no rotation during installation or removal, unlike bayonet-style bases.
The 5008 is a single-filament bulb with a BA15s bayonet base, rated at 12V. It is described as a lower wattage variant of the 1156, which is a widely used automotive signal bulb. The BA15s base features a single locating pin, distinguishing it from the dual-pin BA15d base.
The 5008 serves as the rear turn signal bulb for the Ducati 999R in 2003 and 2005-2006, while the 2004 model year uses a different bulb type in that position.
The 2004 rear turn signal position uses the 232, a festoon bulb with an SV8.5 base, rated at 12V and 3W. Festoon bulbs are cylindrical in form and make contact at each end rather than through a base socket.
Because the 2004 rear turn signal uses a festoon 232 rather than the bayonet-base 5008 found in the other model years, the two bulb types are not interchangeable due to their fundamentally different base designs and wattage ratings.
The 906 front bulb at 8W draws more current than the 3W festoon 232 used in the 2004 rear position. Substituting a higher-wattage bulb in a circuit designed for lower wattage can affect turn signal flash rates and potentially stress the circuit.
The 5008 and 1156 share the same BA15s bayonet base, but their wattage ratings differ. Using a standard 1156 in place of a 5008 would result in higher power draw, which may not be compatible with the vehicle's turn signal relay calibration.