Need a little bit of wiring assistance

Glass fuses that appear good may not actually be good at all.
Visual inspection is not good enough.
I have a good incandescent test light i use for testing fuses. If you dont own a test light, you are shooting in the dark.

The fuses also fail within the little end cap,a failure thats difficult to catch unless you know about it.
And one more thing the fuse holders can corrode and lose contact too.