No power at all, help with wiring please

I haven't checked that. I'm new to all this sorry guys lol. Which is the fuseable link? Headlights do not work

It comes off of the bulkhead and has a square plastic tab attached that says "Fuseable link". It's wire that acts like a fuse. Pinch it all the way along its length and feel for any soft/mushy spots. If no soft mushy, then it should be ok...