Car won't crank, Fusible link blown

That connector at the fusible link is basically a service disconnect ( disables everything inside the cab ), So sure you could patch to if there enough wire left there, install a alternative male/female connector of similar rating, or just delete it with solder and heat shrink.
My plan of attack would begin with download the factory service manual, then remove instrument panel. Everything about under dash wiring would be much easier seen/diagnosed/serviced.