So i have finally done my Gen2 and i will say, that the Gen1 is Far easier to than the Gen2.
The Gen 2 has half of the leds, but dis assembly is far harder, and requires you to un solder the Lcd screen, and all for two leds!
Here are my before and after pics, as well as my original post from 2008 .
https://www.hayabusa.org/forum/electrical-mods/84245-gauge-back-lighting.html