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What can happen when you jump start a car and reverse the red and black wires?
Swabu94
First off it is not going to start if you reverse the cables. If you do reverse them you can do no damage at all or you can actually blow the battery up causing injury to anyone near it. The battery cables can heat up so quickly that they melt in your hand especially if they are small cables. You may also blow the main fuse in the car or you can do serious damage to the electronics in the car. Any number of bad things can happen it just depends on the vehicle.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoYou can fry the electronics in both vehicles.
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