it's simple plug and play...I think Dave at customangeleyes said that it should void your warranty since it pulls less power (?), but check with him on that. whether it's worth it is up for debate, but it's good quality and definitely looks a lot better than the factory angel eyes color. If you do get it, start on the passenger side angel eyes first...there's more room to see what you're doing, so that when you do the driver's side bulb, you'll have an idea of what to do because you're pretty much doing everything on that side by feel since that reservoir thingy is in the way. Make sure to unbolt the 3 bolts that hold the reservoir down so that you have more room to manuver. If you do an angelibrights search, you'll find before and after pics.

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