Once you get the steel strapping and the tie plat onto the bulb socket now it's time to once again line things up with a eye's view.....

Take the bulb and screw it into the socket then take the bulb and socket and lay it into the tube to see where the holes in the duct need to be made to anchor the socket inside the 1ft piece of duct,remember make sure you measure up where the socket should be placed so your bulb isn't to far inside of the duct.........once you have everything lined up make 2 hole's inside of duct to anchor the socket.......the hole's should be directly above the socket and directly underneath the socket........... note: you should be able to make those small holes in the duct by starting with a little nail first,the duct isn't that hard to punch a hole in.......