If you’ve left your headlights on at the mall or the dome light on overnight, you may get the dreaded “click” when it’s time to go. You can count on it happening at one time or another, unless you’re one of the rare people who actually notice the myriad warning bells and tones your car makes, and know which one is saying “Hey, you left the lights on!”
Jumper cables are the automotive equivalent of a defibrillator. They allow a donor vehicle to share its spark of life with yours. While you don’t have to holler “Clear!” when you use them, you’d better know what you’re doing if you want to revive the patient.