I just curious if anyone has heard of this, My friend has a 2012 ford f-150 5.4 and he says he would get in his truck and shut the door and the power would go out, no lights nothing. He told me he would open the hood and move the fuse box a little and the power would come back on. This went on for awhile, but now he has no power, even after he tried moving the fuse box

 

Welcome. Obviously something is loose. I would start checking connections

 

Welcome. A stated above check connections & grounds.

 

Welcome..
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Unfortunately, my friend isn't mechanically inclined. I guess i'll be making a road trip today. I think the problem is actually under the fuse box. If he's been rocking the fuse box in the past to get the power on, chances are he made the bad connection worse.