Car won't start! Is it fuse,battery,or what??
 

Last night i was putting in leather seats in my car and had the radio on but the car wasn't.so i used a set of speaker wire to move the seats back and forth before i put them in,(on the battery) and i saw a little spark but nothing happen.then about 30 mins later i tried to turn the car on and it was dead so i said ok jump start! So i did then my battery light came on and when i try to take the cables off,3 seconds later my car dies and while the cables are on my battery light stays on??? Can anyone help?