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Brake Light Switch

  1. Disconnect brake light switch harness connector. Using an ohmmeter, check continuity between brake light switch terminals No. 1 and 4. See WIRING DIAGRAMS article for terminal identification. Continuity should not be present. Depress brake pedal or actuate brake light switch, continuity should be present. Replace switch if not as specified.
  2. Check for battery voltage at brake light switch connector. If battery voltage is not present, check STOP-HAZARD (20-amp) fuse in fuse box. If fuse is okay, check battery feed wire for an open or short. Repair as necessary.
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