* CarManualsPlus : Provides PDF files of 1999 Jaguar owner's manuals.
* Owners.Jaguar : Jaguar's official website offers digital copies of 1999 owner's manuals, but you need to register to access them.
* Scribd : A platform with user-uploaded documents has the 1999 Jaguar XJ8 Vanden Plas manual you might want to check out.
Please note that you should only visit the official Jaguar dealership's page if you want a complete and reliable original copy of the owner's manual, however it won't be free. For free options I recommended the sources mentioned above first.
Remember there will be advertisements in free documents and sites when trying to access user uploaded PDF versions of vehicle's manuals online like the sites suggested.
