Some answers to the questions:
The sign kit is #1181. The under side light strip is the standard 60 leds/ meter warm white @ 12vdc, from ebay. The one behind the sign is from a 240 leds/meter warm white @12vdc with a 1K ohm resistor to reduce the brightness, from Alibaba. The lower circuit board is a DC to DC buck convertor reducing the 12vdc input to 4.5vdc to replace the battery pack that comes with the sign. The upper board controls the sign.
Sorry I didn't answer sooner, as I had to make a trip to Rochester for a furnace motor and replace the bad one.
On the layout pictures.