I was installing a new battery today, an Optima, and was putting it in...wasn't paying close enough attention...put the negative cable on what I thought was the negative termainal first...but was the positive...and then put the positive cable on what was actually the negative. The horn started blaring in my face...so I immediately took it right off. Notice what I did wrong....attached correctly. Some of the accessory lights and stuff come on inside...other than that...nothing. I looked at the fuse panel in the engine compartment and the big one...ACG 120A is blown. Is it safe to say that if I replace that main fuse it will be fine? Or is it possible I did other damage? I am thinking replace the big fuse and it's ok, that's why they wire it that way...but freaks me out. Can anyone support of verify that thought? Thanks in advance.