Full Color Schematics etc. for 2004-2005 Gen II. Found elsewhere on the internet circa 2007. I make no claim to ownership of this information - no copyrights or other info were included in the original download. I found it easier to look at than the Toyota service manuals. Enjoy!
I found the diagram in another Priuschat forum. I wanted to set up a separate subforum but did not see how. If I recall, look in the site we0h/Prius n that is we{zero}h/Prius [this would be a full URL but as a newbie I am not allowed to post messages with actual URLs yet... :-(
FANTASTIC. Used the diagram to pinpoint what was blowing the GAUGE fuse on my '05 gen2. Turns out it was the cheap door window master switch cluster I purchased on Amazon. Thank you @drjake!