I wired up my amp with 4 gauge wiring, and hooked the ground up, installed the converter, wired everything, ran it to the trunk, cut out the cardboard, made room, hooked everything up, re connect the battery, start the car, look at my amp....no power.

I go to the battery to look at the way it was connected, the fuse blew.

Any idea on how this happened?

I know its not a ground problem, or too big a wire, because I used the exact same wire when I had it my old car, and if it was a groud problem, it has a built in auto-shut off, which it has done before when the ground came lose once. So I dont think it was a ground issue.

Gonna get a new fuse tomorrow and see if that works, but any ideas on how it could have blown?