Start with the LED closest to the foot of the leggings. Sew the positive end to the leggings. Sew up the leggings attaching only the positive ends of the LEDs.



Use the cardboard insert to help while sewing. When you run the needle in the leggings let it hit the cardboard and bring it back up through the leggings.



Continue sewing around to the back of the leggings. Connect the thread to the resistor. Sew the rest of the pieces in place as illustrated in the diagrams. Leave some thread slack when connecting one of the clasp ends so you can screw them together.



The other end of the clasp will be connect to the (-) end of the LEDs. Sew back around to the side of the leggings and end at the first LED you sewed on.