Atari 2600 s-video mod

[Bryan Pope]

All,

	I am working on a Atari 2600 S-video mod and am trying to follow 
instructions for a 4 switch 2600.... But of course the 2600 _they_ picture 
is totally different then the one I am trying to mod..  Does anyone have 
some pinouts for the TIA or for different 4-switch 2600's?  Is there any 
way I could find out the locations of the Lumas / Sync / Chroma myself?

Thanks!,

Bryan Pope