The Ducati 748 uses two distinct bulb types across its model years for both front and rear turn signals: the 5008 and the 232.
The 5008 is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V, and is a lower wattage variant of the more common 1156 bulb.
The 232 is an ANSI-standard festoon bulb with an SV8.5 base, rated at 12V and 3W.
The Ducati 748 (2001-2002) uses the 5008 bulb in both the front and rear turn signal positions.
The 2000 model year uses the 232 festoon bulb in both the front and rear turn signal positions, rather than the BA15s-based 5008.
The BA15s bayonet base of the 5008 and the SV8.5 base of the 232 are physically incompatible with each other, meaning the two bulb types are not interchangeable across model years.
Both the 5008 and 232 are ANSI-standard bulbs applicable to the US and Canadian markets.
The front and rear turn signal positions share the same bulb specification within each model year, with no variation between the two positions for any given year.