Positive and negative battery cable are made for a specific connection between a vehicle and the car battery.
Positive and negative car battery cables.
The battery will have labels marked with a and a sign.
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Find the batteries and their terminals.
Allow the engine to run for approximately 30 minutes so that the alternator can charge the battery.
Remove the negative and positive jumper cables from the vehicle with the known good battery.
If you first connect the negative cable then when you connect the positive cable there is a chance the wrench will complete a circuit.
It is only a safety issue.
The plus is the positive cable terminal the is the negative.
Each battery has two metal terminals.
Second always remove the battery s ground clamp before loosening the positive.
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.
I am assuming you are referring to installing a battery not performing a jump start.
The positive jumper cable should attach both batteries positive poles while the negative jumper cable attaches the two negative battery poles.
Find the red positive and black negative battery terminals.
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.
One is marked positive the other negative.
Disconnect the cables in the reverse order.
Remove the positive jumper cable from the vehicle that needed a jumpstart.
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The red one is positive the black one is negative.
Negative cables bolt directly to the body of the car or engine block positive cables attach to the starter.
First remove the negative cable from the car you jumped then the negative cable from the car with the good battery.