Deck lights
I purchased some resin cast deck light fittings, cleaned them up a little to remove the rough edges in the grilles, but how to simulate the lens? if I placed a clear perspex sheet panel behind the lens, up against the cabin panel, I might suffer from light glare blasting sideways through the perspex, so back to my railway modelling ideas and used some "liquid water" resin. I simply back filled the lamps with this clear liquid resin, allowed to dry and the trimmed up. the resin flowed in to the edges of the grille slots and made a good watertight clear cover, so by the drilling a hole through the cabin panel at an angle, I could pus an led halfway through the drill hole and shine through the light fitting.