The lights are controlled from the main RCMC for the powered F40PH, all that lighting board has is LED's and resistors. OTOH, the Cabbage unit uses a fairly simple TMCC receiver and the uP on the lighting board actually does most of the heavy lifting as far as controlling the lights.
They use the light board as they can mechanically mount all the LED's on one fairly small board, there are nine LED's on that little board. The headlights and ditch lights are the only front lights not on the lighting board.
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As far as the PCB layout packages, it'll take a few hours to get comfortable with any of them. You'll also find out that creating your own parts is pretty much mandatory if you do anything remotely out of the simple mainstream, so that capability is pretty important. I have even learned to morph some 3D part models into something that resembles different parts do the 3D view feature works. 
This is handy to visualize what your board will look like assembled.
