What year and what engine?
you can look in a haynes repair manual for it or contact your dealer
chilton's
This diagram is under the hood. Look for it
Go to www.autozone.com, enter all your vehicles info and then navigate into there troubleshouting and help section. it will show you a diagram.
check google images
you will find the fuse pics in the manual of the car
water leaking uper engin
Autozone.com...click "repair info"
try www.autozone.com
You can find a 1993 Chevrolet Cavalier schematic diagram, for the wiring and cooling system, at most Chevrolet dealerships. You can also find the diagram at most auto-parts stores.
You don't need a diagram to find spark plugs on this engine. Follow the plug wires and you will find the plugs.
You would need to get a buddy to post the diagram on a forum. Otherwise it can't be found for free.