Electrical Electrical short

Hello, I found a short on my car (90 5.0 hatchback) and because it had to do with the dome light switch( i think) I went for a long time and burnt the cables from the connection to the dome light so I was going to run new wires but is there only two cables or three or is it The same diagram for all fuse 8
 

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I think you have a serious wiring problem to figure out because that part of the circuit should have been protected by a fused circuit. If proper, a fuse would blow long before all that wiring overheated like that. That is a fire hazard!
 
What circuit related to the dome light would be 30amp? That sounds way too high.

Even then, any true 30amp circuit would probably survive on a 40amp fuse. Even a 40 should blow and protect wires from melting.

The burnt wires you show in the picture look like something that would happen on an unfused circuit.