As Steve noted, Op needs to get a proper crimper and redo those crimps. Probably with new connectors. I am not absolutely sure the crimps aren't the problem. A multimeter would help.

Orientation of the wires does matter in this case. If the contact side of the hub is connected to the outside of the coax, then power is shorted to ground. It doesn't matter on a typical SoN. Shimano hubs also can have problems if the wiring is reverse, because the power can be shorted to ground. This is likely to show up later though, because it probably will take a while for anything to break through the paint and be grounded.