Mazda Repair Questions? Ask Mechanics for Answers ASAP
It is an electrical issue. Before we get into this, I need to know if you can do wire testing and understand wire diagrams.
Great, use the diagram below.
OHM test this lights black wire to make sure its a good ground. If it is then we need to trace the Red/Orange power wire back to the splice where the other brake lamps are powered. The splice is behind the left rear quarter trim panel.
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