Find the batteries and their terminals.
Positive and negative car battery cables.
Remove the negative and positive jumper cables from the vehicle with the known good battery.
I am assuming you are referring to installing a battery not performing a jump start.
Each battery has two metal terminals.
One is marked positive the other negative.
It is only a safety issue.
Remove the positive jumper cable from the vehicle that needed a jumpstart.
Sometimes you can attach the negative cable to the negative pole of the donor battery and instead of attaching the other end to the negative pole of the discharged battery clamp it to a metal piece.
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The battery will have labels marked with a and a sign.
If you remove the negative clamp and inadvertently complete a circuit to ground there will be no current flow.
The positive jumper cable should attach both batteries positive poles while the negative jumper cable attaches the two negative battery poles.
Disconnect the cables in the reverse order.
Positive and negative battery cable are made for a specific connection between a vehicle and the car battery.
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There are also positive and negative cables in the jumper cable set.
Allow the engine to run for approximately 30 minutes so that the alternator can charge the battery.
Second always remove the battery s ground clamp before loosening the positive.
The red one is positive the black one is negative.
If you first connect the negative cable then when you connect the positive cable there is a chance the wrench will complete a circuit.
Then remove the positive cable from the car with the good battery don t touch a grounded part of either car with the clamp of the positive cable.
Find the red positive and black negative battery terminals.
Negative cables bolt directly to the body of the car or engine block positive cables attach to the starter.