a 'd-sub' crimper ain't gonna work too good! 'd-sub' connector pins are slightly different enough [larger] than those for the KK-type .025" square pins used on the fan plugs. I have to use 2 different crimp tools to achieve the most accurate & tight crimp on the KK-type female connectors. sorry I can't give a source for the tools; bought them about 15 years ago + have forgotten the source.