So,
Some weeks ago I've added internal lighting.
A LED strip just in case I had to open the trailer at night or in poor visibility.
But I wasn't happy the way it was operated. Every time I wanted the light to be on I would have to use the switch in the light fitting. This not only means have my hands free and probably would forget to turn it off during the day when I wouldn't notice the light on.
Or even closing the lid looking away from the trailer and forget to turn the light off.
So I decided to add a fridge door switch that I have from an abandoned project.
Added the toolbox I was looking for, this for tools, spare bulbs (mandatory in France) and to keep the battery for the lights.
Quite happy with the end result.
Photos with the light on and off
The black and red cable you see is the charger until I get the solar cell.
The cooling box is just for perspective, don't think I will be taking it for a trip
I don't think I'll be adding a light sensor to only turn the light on when is dark.