Photos help but if you happen to pass one of the big "Chrome Shops" (Large truck stops with hugh parts and accessories places.. NOT your average T/A or Loves or Flyin-j,, Example Iowa-80 Truck stop on I-80 in Iowa if I recall the name and location correctly) They have a lot, and I mean a LOT of lights.
Get one that is slightly larger so it will cover the marks made by the old one if you have to replace an assembly.
If they have removable covers.. the lamp is likely a standard any auto Store item.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times