If you’re ever stranded on the side of the road with no power or battery to play your music, there’s one simple solution: wire an extra battery into your car audio system. This will allow you to continue listening to your music even when there’s no power or outlet available. Here are a few tips on how to wire an extra battery for car audio:

  1. Connect the positive (+) end of the battery to the positive (+) terminal on your car audio system’s power cord. The negative (-) end should be connected to the ground terminal.
  2. Connect the negative (-) end of the battery to a wall outlet or another electrical outlet.
  3. Connect the positive (+) end of the new battery to your car audio system’s power cord and plug it in. The old battery should still be usable, but it won’t be able to charge the new battery until it is connected properly.