all power shuts down in car without any notice.

Check the battery cables, Make sure they are clean and tight

Where were the wires you moved when the lights came back on?

Sure sounds like you have a wiring problem. Wiggling the wires make the bad contact go away. Check for dirty or bad connections in the places you wiggled the wire at. If you would like us to look at it just call me and schedule an appointment (313-562-7022). I am sure we can figure it out for you. Larry