Crossed cables on 1990 miata battery jump now nothing works what happened?
May have burned-out fuseable link--check wires at starter solenoid for link Additional info - I did this seveveral years ago and the only thing that worked after replacing the battery was the headlights. Turned out that when I crossed the wires I had blown the main fuse (70 or 80 amp as I remember). I could only find ithe fuse at the dealership. The fuse is located below the fuse box under the hood and you need a 10mm socket to get to it. It wasn't too hard to fix once I found out what the problem was.