I ran modern fuse protected relay controlled circuits,this accomplishes two things,one is each circuit is fuse protected, the other is my control switches only see about 150 milliamps.The relays switch the load.It looks busy,but in reality its a bunch of separate circuits.Its common method used modern equipment and cars.My switches and horn button are rated for 15a,but only see milliamps,my relays are rated for 30a but only see about 12a max..my blade fuses are rated close to max load each circuit to protect the circuit.I use a thomas and betts crimper and a separate klein stripper,the T&B crimper has great clamping force.I dont daisy chain circuits through one crimp,I stack terminals..
My wiring wont burn,my fuses will blow.my external harness is 3/14ga SJO rubber coated cable,akin power tool cable protected by coated cloth loom for an early look.
all external crimps are shrink tubed,and harness 'pass throughs' are grommeted..