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Switch Voltage Test

  1. Turn ignition on. Remove switch from trim panel. Disconnect terminal block on wiring harness from switch body. Connect one lead of test light to Red wire terminal and other end to ground.
  2. If test light glows, wiring between battery and switch is functional. Check continuity in Black wire (ground). If test light does not glow, check circuit breaker. If okay, check for a broken wire.