what EXACTLY sparks? the amp or the fuse connection, or the inside of the fuse?I looked at my fuse a little bit tonight and noticed that it has a bunch of smaller sparks and the amp stays on fine...none of the power lights go out....but then there will be a big spark then the amp goes off.
I am going to try a different fuse tomorrow probably. Its only a 200a fuse intead of 300 but maybe I can at least see if its the fuse or not.
AMP=send off for repair.
Fuse connection=tighten that isht down! Use a washer if necessary.
Fuse=REPLACE IMMEDIATELY.