[pantdino]

>Anything can void the cars warranty as long as the dealer can prove that particular product caused the problem


That's pretty much it-- if your tranny goes kaput the dealer could say it was your blower which doubled the HP and the tranny wasn't designed for it. But changing tail lights could not logically result in a blown tranny.


However, if you put smoked tails in and then get rear-ended, that driver could claim it wasn't his fault because he didn't see your stoplights, which were illegal.