
Attach the black wire clamp to the black terminal and do the same for the red. Once the two batteries are connected to one another, you can begin transferring power. Turn on the good car and wait for a couple of minutes. Try starting the dead car. If it tries to start but then dies, wait a few more minutes.
Once you get the dead car going again, remove the jumper cables from both cars. The car that was just revived should remain on for about twenty minutes so that it can fully charge again.