Yesterday I was changing a spark plug on my 99 4Runner and I think my ratchet hit something because sparks starting flying everywhere then the truck made a clicking sound for about 3 minutes and when it stopped I had zero power (no lights, no nothing.) I am thinking a main fuse, but where the hell is it??

 

In the fuse box under the hood. It's typically a 80a or so fuse that has to have the fuse box taken apart since the legs are screwed into the terminals. So, what did the ratchet hit? There may be other fuses that popped too.

 

just went out and took the POWER fuse out and put it back in, reconnected the battery, had power again but when i went to crank, it made a noise and cut power back off. reset the power fuse again to verify and it did the same thing. I think my ratchet hit a ground and arced through the ratchet.

 

If you hit a ground nothing would happen.

I would look at the starter circuit as that seems to cause your problem.