Newbie question on RGB on an NTSC SNES

[FortMax]

Is the only thing I need to do to get working RGB on an NTSC SNES the three 220 uf caps?

Also, when is pin-10 (+5v) used?

Finally, how do PAL systems send the sync signal? Is it sent with Green, or over Composite Video?

[NFG]

1. Yes
2. When you need some voltage for either the TV or circuitry in your cable
3. There's no composite sync on PAL systems, only composite video carries a sync signal

[FortMax]

Thsnks!