just a thought. and not sure if this was discussed or not... i got some advice a long time ago when i was playing with leds on an suv i used to have and i was pissed off that the light dispersion was always pointed or i could never find the right colour in a wide dispersion bulb. (yellow is my fave colour). anyway... take a regular bulb or even those wide dispersion bulbs, and some 800 grit sand cloth. lightly scuff the bulb surface to a dull finish and then look at your result. WAYYYYY better (consistant) light dispersion. try it and see. my 2 cents. i just may have to switch my guage lights up a bit now....