I should know the answer to this one but I don't! My gf left her lights on on her 93 Civic Coupe and it had to get jump started. The guy who jump started her car crossed the cables, and she said there were all these sparks but it did start and she successfully drove home.
Next morning, the car is dead as a doornail. She bought a new battery, but it's still dead as a doornail. Jumping the battery doesn't do anything - the car's completely dead.
Any ideas on what happened? Why did the car run for awhile but is now totally a goner? What could get damaged by crossing the cables?
Any help's appreciated; the car's parked on the side of the street that gets sweeped by the city tomorrow and if we can't move it, a $30 parking ticket's on its way.....