Both the StugIII and my last PzrIII had full scratch built interiors. The last PzrIII also had lighting in the turret and the main hull. I buy old lcd watches in yard sales the take them apary for the tiny lights they have in them. With an "N" size battery they will light for a very long time. All the hatches were operational with locking handles on the inside like the originals. I hid the switch for the turret lights in the stowage bin and the switch for the hull under one of the rear deck covers