cog belt 2 valve Ducatis (750 & 900SS) have the same taillight.
Over here, almost all mount some sort of diode tail light when the original disintegrates. Check out any of the after market suppliers such as Louis or Hein Gericke.
These are from Gericke, so-called "chopper" lights:
- diode taillights.jpg (69.41 KiB) Viewed 2947 times
A good alternative is one of the non-specific round or oval tail light found on many pickups and trailors. Since the above picture, I have gone over to this one from Hella:
- Hella Taillight.jpg (66.52 KiB) Viewed 2947 times
This one is a straight forward, all metal unit of high quality - a real threaded screw going into threaded mount holds the lens! - with two separate bulbs. The filament is no where near as long as in the twin filament bulbs of the OEM lights and lasts nuch longer. The same basic lamp is also available in round.