As for the warranty issue. I hear so many people worried about that. Honestly, if you don't have to cut into wires, if something went wrong, just pull it out before taking it in. I killed a MAF sensor once due to a "modified" intake. I just put it back to normal and never had a question about it. Warranty or no warranty, it wont stop me from doing something. But if you are truly worried, its best to not do it.

I wonder, if you replace the light bulbs with LEDs will that void the electrical warrant since they are not the "correct" light bulb?