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Car Heavy Duty Auto Jumper Cable Battery Booster Wire Clamp with Alligator Wire (7ft, 500 AMP) Emergency Car Battery Charging Booster Cables.. 1. Make sure both vehicles are closed.2. Connect one end of the red clip to the positive (+) of the dead battery.3. Connect the other end of the red clip to the positive (+) of the good battery.4. If the battery is good, connect one end of the black clip to the negative terminal (-).5. Attach the other end of the black clip to the frame bumper or engine block.The battery is exhausted. Do not connect directly to the negative (-) rear.6. Make sure that the clip of one cable does not accidentally touch the clip of the other cable. Start the working vehicle, wait 1-2 minutes, start the dead vehicle, and then keep the vehicle running for a few minutes to charge the battery.7. Disconnect the cable clamps in reverse order. Color : Black, RedMaterial :Copper Clad Aluminum/RubberSize: 7.5 ft?2.3 m?Allowable current :500 AMPSPackage include : 1* positive cable, 1* negative cable, 1* storage bag