Probably the inertia switch.Every car made since the mid '70s has an "inertia switch" that cuts off power and/or fuel to prevent a fire in the case of an accident. I don't know where yours is located, perhaps an internet search can reveal it to you. On my son's Jaguar, it was just below the dashboard near the passenger side door. Less likely is the fusable link. I had an old Honda, and it had a "master fuse" called a fusable link. It was a high-amperage fuse that prevented a major short from doing any damage. It never went bad, I just knew it was there. Boy those Hondas are good.