It’s a good idea to carry a set of jumper cables in the trunk of your vehicle for those moments when you or another needs assistance. They require some care to use them safely, but they’re otherwise very straightforward. One of the main concerns is recognizing which cables represent the positive and negative charge. Another precaution is taking care not to let them touch any other metal surface once you’ve started connecting them to the batteries.
The positive cable is either red or has a stripe. The negative cable is black. Begin by connecting the cables to…