I need to find out if i will need the big 3 or not with my setup. Here is what i have 1 12" kicker L7 750watts rms 2ohm dvc and am going to be purchasing a JBL GTO 1201.1 787watts at 4ohms. My car is a 95 ram 1500 and i think the alternator is 120amps will i need the big 3? information on the amp there are 3 40amp fuses so 120 amps is the most the amp will pull i was told just put that there maybe it will help you guys. THANKS! if you need more information i will try to post it up!