I left my lights on fir a few hours when I tried start car it was dead so had a friend try jump start but he put the leads on wrong way round , this caused a spark & he said it's fine and reeve his car for a few minutes but still my car did not respond , anyway he realised it was on wrong way round and sorted it but still nothing , I have since bought a new battery thinking mine was fried but still nothing but my immobiliser light still works , could it need new 80amp fuse, it's a mk1 mazda mx5 auto & has run lovely with no problems at all, hoping someone can advice tia

 

If you are lucky, you will need to test & replace all the blown fuses.

If your unlucky you will need a PCM/ECU