Now take you bulb socket of your light Kit and wrap some steel strapping around the socket and anchor with a a little nut and bolt but just make it a comfortable fit! and don't over tighten it the socket could crack if not carefull,then take tie plate and anchor it t6o the back of the socket both of these steps will allow you to later centre the socket in the centre of the duct..........when it's you have that done it should look like this!