Have you checked out Guitar Geek? The gear-centric site features discussion boards and pertinent links, but its bread and butter is diagrams of great players’ rigs. You can check out the signal paths of, among many others, Tony MacAlpine, Mastodon’s Brent Hinds, and, most recently, Jim Matheos of Fates Warning. The illustrations are the work of Adam Cooper who is summed up here:

Cooper’s award winning GuitarGeek rig illustrations have appeared in GuitarPlayer, Total Guitar UK, Guitarist, Alternative Press, History of Marshall Amplifiers, Roland/Boss User Guides, Ibanez Steve Vai Jemini & Paul Gilbert Airplane Flanger Instruction Manuals, as well as the longest running monthly column in Guitar World Magazine‘s history: Vulgar Display of Power.

Go browse GG.

Right here.