a car's battery something that will create problem over time and eventually fail you need to be prepared for it a jumper cable is a must-have and here is how you use it step 1 arrange for a donor car pocket nose-to-nose and close enough to the stalled car without touching step 2 switch off the car's donor car should be switched off and both the car should be on neutral switch on the parking indicator step 3 buy a pair of jumper cables and show that the jumper cable is clean and well insulated 16 feet length is ideal step 4 connect the cables take the red clamp first and connect it to the positive of the dead battery look for the positive sign make sure that the clamp is firmly connected to the battery clamp the other end of the red jumper cable to the booster cars positive battery terminal clam the black jumper cable to the booster cars negative battery terminal which is marked by a minus sign make sure that the clamp is firmly connected to the battery clamp the other end of the black jumper cable to the dead car negative or to a bare metal surface on the engine of the dead car step 5 start the cars first start the booster car's engine and let it idle for few minutes after that start the dead car's engine and let it also idle for a few minutes step 6 disconnect the cables disconnect the black jumper cable from the one stalled car engine then disconnect the black jumper cable from the booster car remove the red jumper cable from the booster car and then remove the red jumper cable from the one stalled car now you know it all here is a quick recap and you can buy the best jumper cables from shop car they could calm and for everything else about cars visit article calm