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sprinkles08, ASE Certified Technician
Category: Nissan
Satisfied Customers: 22653
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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I think I blew one or more fuses by jumping my dead battery

Customer Question

I think I blew one or more fuses by jumping my dead battery with the cables hooked up backwards. Now, the hazard horn blares when I put a re-charged battery in. Which fuses should I change? Thanks.
Submitted: 1 year ago.
Category: Nissan
Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

It's definitely possible that one or more fuses are blown but a blown fuse won't cause the horn to sound, a blown fuse would cause an item to not work. Reversing polarity could have blown fuses and could have instantly damaged any electrical component. You may have a handful of different issues going on at the same time now.

All fuses should be checked and any that are blown need to be replaced.

Does the horn sound solidly like the button was held down, or is it going off in timed bursts?