it depends on teh car...its werid casue i did an install and everything was fine and the deck was hella heating up like crazy...it was in a trecel...i didnt know what was wrong but i think that its a bad deck..so i installed it inside a festiva and it runs a little cooler now. check ur connections and make sure u got the appropriate ground...if it doesnt blow a fuse then its ok..maybe jsut the deck itself.