B
Bernie
Guest
A good example of DOT requirements is replacing your STT's (Stop Tail Turn) with LEDs. If you just put an LED bulb in the existing housing it's not going to be legal, because (I believe) all of those LED bulbs are for "off-road use only" and aren't DOT approved. However, if you replace the whole housing with a DOT approved LED assembly, then you're good to go. That's what I did on my truck recently.