By putting a set of Oru lights in the kayak:
There are two velcro loops indicated in the drawing and circled in the shown in the image. In the drawing the snaps are numbered. The velcro will be under straps #3 and #6. The loops are attached under the bolt that holds the deck snaps (circled in the photo). Once the light is turned on, there will be a loop (handle) on the light, attach the light to the velcro through the handle. It is easiest to install the lights while the kayak is open, then assemble it once they lights have been attached.