One is marked positive the other negative.
Positive and negative car battery cables.
Allow the engine to run for approximately 30 minutes so that the alternator can charge the 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.
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.
Positive battery cable is usually red and generally larger is used for providing power to the starter motor and electrical components in a vehicle.
Find the red positive and black negative battery terminals.
Disconnect the cables in the reverse order.
Each battery has two metal terminals.
I am assuming you are referring to installing a battery not performing a jump start.
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There are also positive and negative cables in the jumper cable set.
The red one is positive the black one is negative.
Second always remove the battery s ground clamp before loosening the positive.
It is only a safety issue.
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Find the batteries and their terminals.
The plus is the positive cable terminal the is the negative.
The positive jumper cable should attach both batteries positive poles while the negative jumper cable attaches the two negative battery poles.
Remove the positive jumper cable from the vehicle that needed a jumpstart.
The battery will have labels marked with a and a sign.
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.
Remove the negative and positive jumper cables from the vehicle with the known good battery.