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What happens if you connect batteries incorrectly when jump starting a vehicle?
Wiki User
∙ 14y ago
first up there will be lots of sparks trying to connect cables.then you can damage all sorts of components in your electrical system,from the battery all the way to the computer, including burning out wireing harness, fuses, computer, starter, etc.you could also cause a fire in the car,
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoFirst you check your bank account. You may blow up the battery, and your face with it, if your car has on-board computers, you may fry them. Your alternator will not like it and most of the insulation covering the wires will melt and most likely catch fire. When you finally get it repaired, and your bank account is empty, store the bill with your jump leads.
Wiki User
∙ 10y agoIt can just blow the main fuse or it may do damage to some of the electronics and the battery. If you do it know that you may or may not be lucky.
Wiki User
∙ 15y agoDepending on what year and model vehicle, you probably roasted most of the electronics in your vehicle.
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Your car doesn't turn on.
