Bulbs are DC! No problem with using a LED one, just order the correct fitment! All bikes use DC!!!
The stator driven from the crankshaft generates AC, it then goes to the rectifier to convert to DC before powering lights...
Some CDI units are AC some DC, same principle, when fed by the Stator it is AC volts, the CDI will then rectify Part of it it to DC to use for ignition.