Right now I don't have any power to my head unit or amp. The system was installed two years ago and I have not had one problem with it until now. It actually didn't start until my friend had to jump me off because my battery went dead because we had the radio on too long with the car off. I got the battery checked and it's still good. I've checked the fuse for the radio in the fuse box under the driver's side and it's not blown. I was thinkin the fuse under the hood going to the battery could be blown but it's hard to tell (It's a stinger 150A fuse), but that shouldn't affect the head unit right? Can someone please help me out?