My friend hasa problem and here is what he wrote :

1991 Honda Accord LX
Heres my problem.......I gave this kid at work a jump and his hood doesn't stay up by its self so he let it down and it fried sumthing in my car. The next day I replaced the ground wire that leads from the battery down next to the starter, and the car took a jump I let it run for about an hour then shut it off and its like the car had no juice, no lights, no nothing. So I figured it was the battery, bought a new battery and when I hooked it up the main fuse blew, I had another one in the car and tried that one too and it blew as soon as I touched it with the screw driver. Now I am guessing that there is a short sumwhere but I have no clue where to start and I am open for any suggestions.

I'm thinking it a bad ground or there are some wires touching, any ideas would be great. thanks