[Thalass]

These days nearly every truck I see around town has LED running lights, brake lights, indicators, ect. Everything except headlights, really. I know they use alot less power for the same brightness, but I'm wondering: Has anyone here done this? Does it make a big difference? I figure if trucks do it, then there has to be some advantage, otherwise they wouldn't spend the money.

I don't know about the rest of the world, but you can buy replacement modules for most car lights in australia for a couple of dollars, which just fit into the bayonet socket and such. It's more expensive than incandescents, but if they use less power, and physically last longer, then surely it's worth it.