That guy's diagrams are pointlessly confusing. The one on outofspec is much clearer.

But in the end it was someone in IRC who sent us the pinout from the Apple service manual who straightened us out. Thanks.

Yours looks nice though, iMac600

One thing though, that threw me at first: there's a convention that lines that cross but don't join should have a little "jump" in one of them to make it clear, like a little bow shaped bridge over the other line. As drawn, it looks like there's a whoooole lotta short circuiting going on.

Either that or route them outside so they don't cross any of the other lines.