. clamp one of the positive (red) jumper cable ends to the dead battery's positive battery terminal.
's important to make sure the metal ends of the jumper cables do not touch each other or any metal surfaces on the car until they are connected to the correct battery terminals.
, begin attaching the jumper cables:Attach the red, positive cable clamp to the positive (+) battery terminal of the dead battery.
Which way to hook up jumper cables
By following these instructions, using your jumper cables sensibly, practicing safety and addressing other potential concerns, your car will run better, be safer, and last longer.
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So, while you're hooking up the discharged battery to the live battery in the booster car, you'll want to do this without creating any sparks.
Safe way to hook up jumper cables
Deanna sclar if your battery has died, you may be able to use jumper cables to jump start it from some good samaritans vehicle.
When you handle the jumper cables, be aware that their function is to transmit electrical current from one car to another.
If you are prepared, you already have a good set of jumper cables in your car.
Possible, consult your car's manual for the correct order in which to connect the jumper cables.
. clamp the other end of the positive jumper cable to the positive battery terminal in the booster car.
Jumper cables capable of hundreds of amps, if your good battery is barely up to the task, it could take very few seconds to bring your 12 volts down too far to start.
The car still won't crank (start):if the dead car gets no "click" when you turn the key, the booster cables may not have a good connection at the terminals.
. make a final check to confirm that the jumper cables are not near any moving engine parts, and then start the booster car.
But, while longer cables provide convenience, they may lose power as the longer the cable, the farther the energy has to travel.
As you are hooking up the jumper cables, make sure the metal ends of the cables don't dangle into the engine compartment, where they could get caught on such moving parts as a belt or a fan, or on the outside of the car, where they could scratch the paint.
If you can safely use jumper cables on your vehicle, make sure that the battery on the good samaritans vehicle has at least as much voltage as your own.
Until you get the proper connection you can leave the cables hooked up for literally hours and not one volt will reach the dead battery.
Just bought a pair of 4 gauge cables so im good to go on that end, i learned my lesson when some crap cables melted and caught fire.
Do not let the clamps touch each other while any part of the cables is still attached to a car.
If two people are available to jump-start a car, one person can simply hold the ends of the jumper cables safely separated while the other person moves between the cars, making the proper connections.