Park the working car close to the dead car
Turn off both cars
Put both cars in park or neutral
Set the parking brakes
Open both hoods
Locate both batteries
Attach the red clamp to the positive terminal of the dead battery
Attach the other red clamp to the positive terminal of the working battery
Attach the black clamp to the negative terminal of the working battery
Attach the other black clamp to an unpainted metal surface on the dead car
Start the working car
Let it run for a few minutes
Start the dead car
Let both cars run for a few minutes
Remove the black clamp from the metal surface on the dead car
Remove the black clamp from the working battery
Remove the red clamp from the working battery
Remove the red clamp from the dead battery
Keep the jumpstarted car running for at least 15 to 30 minutes