The firewall, a partition between crew and engine rooms, had several controls and devices on it. Trumpeter tried to reproduce the firewall in full detail. Unfortunately they seem to have used "Early" Tigers as their reference. The kit's firewall is an "Early" one in almost every respect. I will discuss how to convert it into a "Late" firewall appropriate for this kit.
These two parts, "Q45", did not exist in Late Tigers. For the one on our left, you should erase its attachment point from the firewall. The control on the right was replaced, in "Late" Tigers, by a similar but smaller knob without a serrated edge.
These two handles, "Q21", did not exist in Late Tigers. Do not apply them. Erase their attachment points from the firewall.
This handle, which is a cable pull, was located on the crew's side of the firewall. It is missing from Trumpeter's kit. Unfortunately I don't yet have drawings of it.
Although Trumpeter's kit does not have the handle, it does have the base rectangle where the handle would be bolted on.
This large pipe, part E38, existed in "Early" Tigers but not in "Late" Tigers. It is not correct to place it in this model. Omit the part and erase its attachment points from the firewall.
Here, beside the fire extinguisher on the firewall, Trumpeter have placed a bare flat rectangle. The only thing about it that is correct, is its size. There was in fact an electrical distribution box here, the same size as this rectangle but about 4cm deep. Also, it was not placed on the bottom edge of the wall like this: it was attached to the fire extinguisher bracket and was about 10cm lower down than Trumpeter's rectangle.
Trumpeter put a number of electrical controls on the engine side of the firewall, and on the side of the engine room. For example: the main battery switch.
The placement of these components would be correct for an "Early" Tiger. But, in a "Late" Tiger, these electrical components were in a very different place. They were all on a single panel on the crew side of the firewall.
Because the battery switch was gone, its handle was not present on the crew side of the firewall. If you wish to scratch-build the correct panel and put the controls on it, you should attach this handle (E18) directly to the battery switch (D33).
This large handle existed on "Early" Tigers but not on "Late" Tigers. You should not use the part, and also erase the curved mark on the firewall where it would attach.
The racks for hanging MG ammunition bags, in the Trumpeter kit, are not exactly in the correct places, though they are very close to it. For reference, here is a "Late" Tiger firewall in the Saumur Museum Tiger. Note: the access door is open, and the lead tube from the fuel primer is missing.
Over to our left, we find the panel that carries the electronic devices in "Late" Tigers. Unfortunately, in this museum vehicle it has been stripped bare.
This is a German diagram showing how the components were placed on that panel. Note, for example, the battery switch at bottom right, whose handle is the kit's part "E18".