I'm currently building the Merkava IV LIC. The instructions are not really clear and sometimes it is a true guess game to understand where you have to put the part.
So far I have managed to find where to glue the various parts but I'm stuck with the part F13 which looks like a small keyboard. Academy has you gluing it near the back of the commander hatch but if you do so the vision block becomes blind which is a non sense to me.
Here is a picture of the instructions (from hobby search). See bottom right.

I've checked my references (Tankograd and Desert Eagle) and haven't seen a single photo of this thing.
Have Academy played with their imagination or is this thing really existing?
TIA
Olivier