So I was having trouble turning off the car PC, then turing it back on.
Power connectors where fine, No loose cables (MB and drive)
Ahah! the momentary switch to the jumper on the mainboard No stress relief on the wire... folded a few times and bad connection. replace switch all better.
I will re wire it later
D201GLY2, DC-DC power, 3.5 inch SATA
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