Electrical Problem

[71cheyennezz4]

Im having some weird electrical problems, every so often when im driving i seem to loose all voltage to the truck it will start running like hell and you can tell its not getting 12 volts to the distributer, also every once in a while when you shut the truck off, everything will be gone and you have to wait a while or just get lucky and suddenly power will return, ive got it narowed down to where it could be but everything checks out, i.e positive starter wire ect. any ideas?