Last set of LED lights for the angel eyes I bought required no coding. Just plug and play. I bought the highest wattage I could find. They look better than stock, but they still don't throw the kind of light the newer ones do. I think they use cfl's. Not sure. Since I have a 2006, there isn't much in the way of replacements I've been able to find that would be brighter. I'm contemplating buying some old ones out of a junk yard and cutting them open and modifying them. Just haven't decided if I want to spend that kind of time on it.