bgum wrote:
I would suggest you go back and solder those wires and shrink wrap.
Actually, crimp connectors with heat-shrink sleeves is the preferred method of connecting wires where vibration is present.
Since solder creates a stiff section in the stranded wire, the wire tends to break right next to the solder joint.
Solder connections on wires in vehicles are just not reliable. You might notice that there are no solder connection on cars: they're all crimp connections. In fact on aircraft, solder connections are completely forbidden.