BA9s bulbs from superbrightleds.com are a direct fit. (120deg BA9s-x-x-xV)
<====got the dark blue ones in mine
white gauge face its at dusk so there is a little ambient light in the center of the face.
the only mod i did inside my gauge was to repaint the reflector gloss white instead of that OEM light blue/green
here is what they really look like at night