Any connector that would have crimp or solder on pins as you suggest would probably hold moisture and fail. The originals are potted for several good reasons. Joe has the better idea, find a good used one and do a proper solder and tape job to seal it all up and it should be good as new. Whole harness would be good as well, but much more labor intensive. I haven't looked, but a splice in end may be available new, but likely cost a bit more.