Notes On SCART Cables

RGB Scart cables are far more common in Europe than they are in U.S., where SCART TVs are fairly rare
So you may have difficulty locating an RGB SCART for the 'Video Console to JAMMA' projects

Here are a few places which may sell RGB cables for various consoles
National Console Support (US)

CA Games (Scotland)

New Generation Consoles (England)

If you want to try making your own cable, the pinouts for the Saturn (and lots of other consoles)
can be found at
GameSX OnLine