This article outlines the replacement/improvement of the shower connections and the replacement of the stock fixture in an Airstream 310. 

Last Winter there was a lot of hub bub about LED tail lights on the web.  I had been noticing them on a lot of semi's and on some of the newer cars, and they were definately a lot brighter.  Especially in the day time.  The problem was that not all lights are certified for automotive use in tail lights.  Here is an article on installing them in a Classic Motorhome.