How to Replace Battery Cables

Below guide will teach you How to Replace Battery Cables . Please follow the instructions carefully.

Things You’ll Need:

  • Combination Wrench Set
  • Battery Brush
  • Battery Cable

Estimated Costs:

  • DIY Costs: Est. $112.82 parts only
  • Shop Costs: Est. $243.94 parts and labor


  • Prop the engine hood up and look for the battery.
  • Unfasten the nut holding the negative battery cable to the terminal and discard the cable from the battery post.
  • Next, unfasten the nut holding the positive battery cable to the terminal and discard it as well.
  • It is suggested to jot down the route of the cables for installation reference. Detach the negative battery cable from the engine block and the positive battery cable from the starter solenoid.
  • Make sure that the new cables are of exact size of the old cables. Now, connect the new positive cable to the starter solenoid first and then the negative cable to the engine block.
  • Using wire brush, wipe off the dust or corrosive substance from the battery terminals or posts.
  • Next connect the positive battery cable to the positive battery terminal and secure it with nut. Better to use anticorrosive compound on the terminal to prevent corrosion.
  • Now install the negative battery cable to the negative battery terminal or post.
  • Turn the engine on and make sure that the vehicle starts smoothly.

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