Those no blow fuses are real good at getting right to the problem when diagnosing electrical issues.
Just follow the magic smoke to the problem, no fooling around following wire colors for us that are color blind.
Or making sure the connections are clean and
"Goot N tight"
No need for those silly meters either, as most times they are just a
"fluke"

And I prefer 1/4" copper tubing,as it is a better conductor.