I've got the light that came with my Kaymar, if you want it Matt. You'd need to extend the wire so it could go all the way down to your hinge then back again to the stock location, and figure out how to deal with it when you take the spare off. But I'm sure those issues have been resolved before by others, let me now if you want it I'll bring it next week.
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 06 TW200, 89 TW200, 09 TTR125, 07 TTR90, 07 CRF50