How is the bulb staying in there if you just drilled a hole?
Blue Bus: how did you do yours?
You drill the hole just so the light bulb will go inside the upper light. You then take the socket portion you remove from a lower light and glue/epoxy it to the upper light over the hole you drilled. Then the socket the bulb goes in will lock into the part you glue to the marker light. The pics even though not in order pretty much show it....