The 2-Rail and 3-Rail versions of the cars are identical except for the truck and coupler assemblies. Looking at the exploded parts diagram, the light board contains components. The capacitor is recognizable. The other components may be diodes, resistors and a voltage regulator.
The diagrams show both 2-Rail and 3-Rail parts when they differ. There is only one version of the light board, so it should be universal, accepting AC or DC power.
The CZ cars have a plastic frame, so it requires both center rail and outside rail connections on the truck. With the 3-Rail trucks, the red wire is attached to the screw under the roller pickup, and the black wire is attached to a screw on the side frame (circled).
With those 2 connections, your lights will be powered by track power.
It looks like the cutoff bar is removable, but likely you will have to break the small plastic connectors if they were glued in place.
Bob
