I had one of mine burn out quickly. Fortunately, my Triumph dealer had a similar bulb in stock. Part number T2704208
10 watt 12 volt... I forget the style of the light rightoffhand. Sorry about that. However, I've also read the bulb goes in a ninja 300 as well, so they are a fairly common bulb. Just not in the exact style that EBR has them.
EDIT: 12V RY 10W is what it says on the bulb. that may help. :D