I replaced the white bulbs used for the gauges with white LED bulbs which were much brighter. Finding the right LEDs for the red, orange, and green idiot/turn/headlights proved to be tricker. Using a LED bulb for those lights was WAY too bright. Ultimately, I discovered the solution… 1895 LED bulbs made to be used in pinball machines. Yup. They’re not as bright and the light is much more defused. Perfect.