I plugged the battery in the wrong way round. Is my car dead?

Asked by Mar 14, 2012 at 03:43 PM about the 1994 Mazda 323

Question type: Maintenance & Repair

My 323 won't start now after the terminal sparked briefly because I connected the leads to the battery
the wrong way. What do I need to do?
Is this just a matter of replacing a fuse? If so which one is likely to be the culprit?
It seems completely dead at the moment.
Oh dear...

4 Answers

you reversed the polarity and may have totally killed the battery, and possibly even the alternator. you may need to seek a professional.


Check the main fuse, usually that takes a hit to protect the rest of the systems. Be sure to check that all the systems are working correctly before driving off(ie cooling fan, lights, etc)

2 people found this helpful.

Thanks. I tried the key but everything's dead. I'll check the fuse when it's light. Hopefully it's just that

check main fuse. master fuse box under hood

1 people found this helpful.

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