I've got all of my 'idiot lights' (oil, neutral, brights, turn signals) wired up to 1 RGB led mounted in the bucket that I call my 'everything light' it's not as simple as what jrk is talking about, but it is super clean looking. LEDs themselves are watterproof, just a dab of silicone in the housing should work. if you spec the resistor right they will never burn out. I posted on here somewhere the diagram of how to hook up an led neutral light, but dtt's search function sucks so I'll post it here when I get to my computer. this could be modified to work with any of the lights, but keep in mind that resistor is spec'ed for the forward voltage drop of a GREEN led and would need to change for other colors.