Where are you on this? What have you checked tested and what have you replaced
"No power at all" is pretty limited. Battery wiring to starter relay stud, fuse link, "big red" through the bulkhead connector terminals, continue on to ammeter, and black leading out of ammeter. That black splits off a few inches down (wrapped up) at the "welded splice" and branches off to headlights, to ignition switch, to fuse panel "hot buss" and on out through bulhead (big black) to alternator output stud