wiring diagrams

I need to know where I can find printable wiring diagrams for my '89 Isuzu Trooper. All the diagrams would be useful, but right now I am specifically looking for the fuel system wiring. I also need to know how to read these diagrams. (do they make color coded diagrams?) (you have a willing-to-learn novice here.) Thanks for any help!
Big Warrior Viking :-)

Check online on the Autozone website. They now have some wiring diagrams and even procedures on how to fix some things now.