Well, I am sort of getting there. The light is now a little brighter, the bulb shows as it should do... but I have issues... shadow issues!!! I hate them! I tried taking them out, but then the light looks really flat especially at night time, but somehow they seem to stick out on the fixed mesh and don't on the original...

I extracted the mesh, and cloned the Euro wall lamp from OFB. I then put the mesh back on that and adjusted the textures and values. I forgot to check if it takes the recolours...
I have let the sort-of-fix override the original so only have one in game, but here is the file if any one can help with the silly shadows... I want to live in a world without shadows! :reaction