I have 10 bulbs in my cluster. I am going to have to pull off my bezel and hvac to see whats in there but i am assuming 2/3 behind the hvac. I am going to do my 4x4, fog, steering wheel and light switches as well eventually but i can assume each of those only has 1 bulb. And I am not worried about the radio because the double din i plan on getting you can change the colors.
I was considering blue, but everybody does blue and i want something different, plus my truck is red. And supposedly red light does not diminish your night vision as much as other colors.