Originally Posted by CUtigerfan
I've thought about that and at first it convinced me to stay away from them but the more I thought about it the more I realized that for somebody to run up on you at night and rearend you they would see you in their headlights from a pretty good distance before they hit you. And with braking I'm not going to tint the light on the top of the cab so I should be good... in theory.
Do they make and LED replacement bulb for the stock ones?
The problem isn't at night. It would be worse in the daytime as sunlight tends to wash out the bulb's light. Even incandescents aren't as noticable in the day as they are at night. Also, the dark taillight mod is not DOT approved so in court you might still be held partially liable even if you think the other driver should have been able to see them.
I've been behind a truck with real dark taillight lenses and what I believe were LED bulbs. They were so dim I could barely tell he was hitting the brakes in daylight.
Most LED bulbs are too dim, especially the pancake shaped ones. The biggest problem with them is their light is very directional and so they don't utilize the light assembly's reflector so unless the shape itself is large, it looks like two small dots. There are some out now that emulate an incandescent bulb by shinning light to the side so it hits the reflector. I found these on http://www.superbrightleds.com
I've never tried them so I don't know how well they work or how bright they are (you would want dual filament for the tail lights).
It's a common mod on my motorcycle because people are looking to save watts so they can run heated jackets, vests and extra driving lights. I did find one that was pretty bright. It was directional as well but it was large so it filled up most of the bike's tail light lens. I doubt you would be able to get it through the stock bulb hole.
I've also heard that red shows better through the tail light lens than white does.