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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    C93 (N/O/AS) Confirmed

    Cadillac · Regular Production Option

    Opera lamps

    Years 1971–79 Models 1

    Documented applications

    Fleetwood
    • 1971–79 Confirmed

      Introduced for **Brougham & Series 75 only**, wider availability from ~1975

    This page aggregates every documented appearance of C93 (N/O/AS) in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.