I need a couple more 12V outlets for when I am of staying the grid, after doing a search on what is avaliable I have decided to put one of these in

I would like to take the power for the panel from the Setec instead of a dedicated run from the battery that way when the battery switch is off this panel will have no power to it meaning the volt meter won't be able to draw the battery down.
Does anyone know if there is spare room in the Setec?

I would like to take the power for the panel from the Setec instead of a dedicated run from the battery that way when the battery switch is off this panel will have no power to it meaning the volt meter won't be able to draw the battery down.
Does anyone know if there is spare room in the Setec?