Despite the fancy look, the harness is lagging quite simple:
Dial 7 beads and connect them in a ring, passing the needle through the first bead. Then dial 8, 9, 10 beads and pass the needle through the third bead. And continue to weave: pick up 3 beads and slide the needle through one bead from the previous loop. The lock is attached to the harness with a bell and studs.