I have a JBL 1200.1 amp and the alt is 105amps, the lights dim pretty bad and i havent even turned the amp up at all yet. it pounds my 15" rockford good. I blew my 60A fuse so i put a 80A fuse in, will that hold good? My other queston is will upgrading my alt to 140 be enough amps or do i need to go higher? any feedback? thanks!