This is an interactive wiring diagram for CB750sohc. With it you can view the wiring as a whole or turn on and off each system to isolate the system you wish to view.
http://oldmanhonda.com/MC/wiring750K1.html
See a couple of familiar names and faces here! Reckon thats to be expected as I frequent a couple other forums also. First forum I was ever on was the xs650 site and gained from it, so I look forward to popping in here some!
Here's my rattletrap