2012 f150 - replaced rear harness, now cranks but won't start. No lights or fuel

My 2012 f150 now will not start after replacing the main harness that runs along the frame from the front to the back. I've checked the connector plugs, and they are attached properly and none of the pins are bent. I have no fuel or rear lighting of any kind, as if there is no power or communication. I've also check each and every fuse under the hood and in the passenger compartment (which takes awhile). It cranks over fine, but nothing attached to that harness works. I'm stumped.