Ikelite Universal Fiber Optic Mount Kit for Underwater Housings Insert one end of a compatible fiber optic cord into one of the two circular port openings in the Mount on the velcro side. Insert the other end of the compatible fiber optic cord into the functioning strobe that you intend to trigger Hold the Mount over the housing where you intend to attach it. Choose an area that will allow good adhesion and allow the Fiber Optic Cord to easily see the camera flash. With the camera inside the housing, fire the camera flash several times to make sure the strobe is properly triggered. Remove the fiber optic cord from the Mount. Using scissors, trim any excess Velcro material from the Mount which could interfere with housing controls or functions.