I am currently having a bad experience with adding on aftermarket items. I have Audi style LED strips installed. I added these last Sunday. For a few weeks now I have had a problem with my electrical system. My battery holds a charge of 10.62 V and with my car running I get a reading of 12.2V. This causes all of my lights (interior and exterior) to pulsate. I know that I should have taken care of this problem before adding on the LED's, but I didn't. The response from the dealer is, the tech thinks the problem is caused by the LED's. I have already been back to the dealership with the warranty act printed out and I circled the section that the should read. Lets see where that gets me.