No, but isn't that complicated. Every electrical component has two connections: power and ground. The one attached to the surrounding metal is the ground. Often they are attached with a sheet metal screw that has become loose or corroded; hence the poor connection.Is there a chart that shows were all the grounds are
That's published in your owner's manual and repair manual (you do have a repair manual?)plus what the correct fuse goes into each circuit?
On a previous point: I'm not saying that you shouldn't spend AU100 on an utel PowerScan PS100 Electrical Circuit Tester. But you can learn a lot from a simple, $10 tester like the one pictured below. Given that you are new to electrical circuits, a dirt-simple tester might be a better way to get started.