My wife's 2013 F150 was having trouble starting in the mornings lately. Yesterday it wouldn't start at all and we had it towed to the dealership. Turns out it was a relatively simple fix, for them anyway. They had to switch fuse 27 and route it through fuse 70. It was an $18 kit, plus labor. This kit is relatively new and they said they used to have to replace the wiring harness and would cost up to $2000! $200 vice $2000, easy choice. Just got it back today, so far so good.

 

so they by-pass a bad wire ?

 

I think so. I noticed another thread that mentioned a bulletin and referenced a kit to buy. The bulletin probably says what to do. There is no recall for this problem.