look it up on the web. it says that the dealer cant refuse or void ur warranty unless they can prove beyond a shadow of a doubt that the aftermarket accessory has caused the failure in whatever broke. i have my dealer kissing my butt because i walked in with a copy of the law and told them what the penalties were if they jerked me around. its bad for them to be listed as law breakers in the BBB registry. pardon the spelling i know i suck at it.