The Ducati 749S front turn signal requires a 906 bulb size while the rear turn signal uses a 5008 bulb size. The replacement chart covers 2003 to 2006 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ducati 749S uses two distinct bulb types across its turn signal positions: the 906 for front signals and the 5008 for rear signals, with this configuration consistent across the 2003-2006 model years.
The 906 bulb follows the ANSI standard applicable to the US and Canadian markets and is classified as a T10 miniature wedge type, operating at 12 volts and 8 watts.
The T10 wedge base on the 906 bulb is a pinless design that seats by friction, meaning no locking mechanism is involved in its retention within the socket.
The 5008 bulb also conforms to ANSI standards for the US and Canadian markets and uses a BA15s bayonet base, which is a single-contact, single-pin bayonet fitting.
The 5008 operates at 12 volts and is described as a lower wattage variant of the 1156 bulb, meaning the two share the same BA15s base type but are not electrically interchangeable due to the wattage difference.
Because the 1156 and 5008 share a BA15s base, the 1156 physically fits the Ducati 749S rear turn signal socket, but its higher wattage output falls outside the specification for that position.
The front and rear turn signal sockets on the 749S accept physically incompatible bulb bases, as the T10 wedge and BA15s bayonet fittings are not interchangeable with each other.