Peterbilt 386 starts and dies immediately

[Hyliard15]

13 Pete 387. Getting the same code and same symptoms. Have done everything he has done as far as testing inputs but randomly the truck pos that code about power 1 low or short and the truck shuts off until I get out and pull the power relay fir a couple seconds and put it back in. Im going to pull steer off this weekend and get down around starter looking for a bad wire or plug and also going to power wash the area and see if I can reproduce the issue. Everything that has been said in this feed my issues almost mirror them. Thanks