Been in car audio since 1988. An old fart.Dont understand why you ran 0 gauge wire ?? 4 Gauge should have been big enough at 15ft, and a 60 amp fuse should be plenty for that amp?? If you put a bigger inline fuse and with the o gauge wire, your drawing too much juice and ruining your alternator and not giving enough time for the battery to charge up! You may think about a bigger alt as well!I had 4 g running to an audiobahn hct 2200 at a 1ohm load and the hct 4125 at 2ohms on my mids and used a 6farad cap on the 2200,and straight 4g wire to the 4125 and a 150 anl in line fuse to a dist block, and had no issues and grounded both amps at seperate locations in a 98 xcab chevy with the stock 140 amp,all 4 gauge. ??