What happens if jumper cables are hooked up in reverse


Asked by Aug 27, 2015 at 10:45 PM about the 2001 Ford Expedition Eddie Bauer

Question type: Maintenance & Repair

We were trying to jump the car and hooked up the battery cables in reverse

3 Answers

Tom Harmon

Most newer cars won't get any or little damage. The OB computer is well protected as are most of the electronics ... It would vary from car to car but I suspect the rectifiers inside the alternator or ...ARGH .. The sound system could get damaged ... it's something where every car may react differently


It usually blows a main fuse or two, look in the power distribution box, if there are any blown it will be obvious.


Must disagree with my learned friends- 21st Century cars are electronic nightmares when they are disturbed- you don't wanna go there- bad ju ju-

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