To me it looks like there is a wire in RT, I think I can see just see a mm of copper and the edge of the insulation, but you're right it's not very clear.
I can't tell where the brown wire in the terminal next to it goes. It could be looped to L or the one leaving top right of the shot.
I can't tell where the brown wire in the terminal next to it goes. It could be looped to L or the one leaving top right of the shot.