Forgive me for my electrical ignorance. I have an 800 w amp powering my sub and it blew the main inline 40A inline fuse on the power wire that runs directly off the positive battery terminal. I did a Mickey Mouse extension on the ground wire, and found it had shorted out on the body after a day of wheeling. After correcting the short and isolating it, I put a new fuse in and it blew immediately again. Where the [email protected] to I go from here!?!?