My wife just saw a special on PBS concerning Kadesh. I told her I would check out to find a scenario about the battle. I found this one. We played it several times and we really enjoyed it.
The layout that I have in my files is different than the one that is displayed here.
This layout is missing which hex is the Kadesh hex. It is the unoccupied camp hex.
The Ne’arin light chariot units are the ones in the upper right had corner.