make sure one thing anything aftermarket part to fail infinity not cover warrantee. your aftermarket spolier may use more electic than oem part and will blow fuse in side kick panel brake fuse.i still have warrantee but they try to blem me has aftermarket navi and other.it woun't make sence audio use only radio fuse but they will f... up .other opion getr smart fuse you will know what happen cost you about $20 replace all fuse in your car.