Originally Posted by Cruz
Many countries have very different rules re HID lighting, so there is not one single definitive answer on the fitment or use of them. If you are only riding off road or in the middle of BFI then the retrofit HID probably isn't a worry to anything but some local wildlife.
One thing I hadn't thought to mention was the Federal DOT rules. Mostly, Federal DOT laws are only enforced on new vehicle manufacturers and commercial vehicles by officers with special training. Generally speaking, the average law enforcement officer does not enforce Federal laws or statutes, they enforce state laws. That's why I advised looking at your state vehicle code to find the law in your state related to these lights.