The good battery should have the positive jumper cable attached to the positive battery terminal and the negative jumper cable attached to the negative battery terminal.
Car battery terminals positive negative.
It reacts with other substances and you get battery terminal corrosion.
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Clamp the negative cable black to the negative terminal of the good battery.
The positive terminal will be marked with a and the negative battery will be marked with a if there are plastic caps over the terminals remove those now.
Subsequent shorting of the positive terminal to ground will then produce no current flow because the current has no return path to the negative post.
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Each battery has two metal terminals.
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Here s how it s done.
Clamp the other end of the positive cable to the positive terminal of the good battery.
One is marked positive the other negative.
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Jump starting a vehicle with a set of jumper cables is pretty easy.
Be careful not to touch the negative and positive terminals at the same time with the wrench or you could create a.
Next use a wrench to unbolt the negative battery cable.
And of course always reconnect the ground last.
There are also positive and negative cables in the jumper cable set.
Depending on which side it forms you can diagnose various battery problems if it is on the negative terminal this is a sign of undercharging while if it is on the positive terminal it is due to overcharging.
Clamp the other end of the negative cable to a clean metal part of the engine like a bolt head or bracket in the car with the weak battery.