Just pick the housing for the correct number of pins, pick the colors and genders for your wires, and snap them into the housings (note: it’s not easy to get the wires back out, so plan carefully!). ###>Just pick the housing for the correct number of pins, pick the colors and genders for your wires, and snap them into the housings (note: it’s not easy to get the wires back out, so plan carefully!).