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Nonfunctional Brake Lights

Something is keeping electrical power from getting to the brake lights or from the lights back to the negative terminal on the battery. In other words, there is an "open" condition in the circuit.

There could be many causes:

  • The new switch has not been properly adjusted when installed.
  • There is an open [disconnected or broken] wire in the circuit.
  • There is corrosion within a harness connector, or where a ground wire attaches to the body sheet metal.
  • It is even possible that a brand new switch can be defective.

I'm sure that there could be other causes, but these are all that come to mind at the moment.

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14y ago
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Q: Why my 74 sp beetle brake light don't work fuse is good and switch is new?
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