A TV SCART cable allows to connect the CPC/CPCplus to the TV set. This is especially helpful if you couldn't get your hands on a colour monitor or want to use the CPC/CPCplus as a video console in the living room.
Schematics
Amstrad/Schneider CPC (classic)
Colour Picture (RGB)
This schematic requires a TV with RGB input on Scart Connector (many TVs have only Composite input implemented on Scart connectors).
The 9V and 1.5V batteries are optional. They may be helpful to switch the TV to RGB mode automatically, without needing to activate it via buttons on the remote control.
Black & White Monochrome Picture
Alternative RGB Wiring
Amstrad CPCplus (In theory also GX4000, but it has its own SCART outlet)
Colour Picture (RGB)
Black & White Monochrome Picture
Additional Resistors
Info from OCT: "I recall that when Amstrad Action came up with the proposal for a SCART cable back in issue AA41, numerous readers wrote in suggesting that resistors (most commonly: slightly below 330 ohms) should be connected "in series to the colour signals [...] for improving picture quality" (AA45, June 1989, FORUM, p. 23), so they seem to have appeared overblown in comparison to the CTM644s' back in the day."
Videos
A SCART cable howto:
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