I have replaced the missing CDI (missing when fa50 was given to me).
All the rest of the parts seem to be in place, except for the battery, and the wire going to the black single electrical connector under the seat (mounted to the outside of the bike and above the engine)
I have continuity across the - and + of the coil.
I have wired the rear brake closed but no spark.
Also while kicking the engine I read around 1.5vdc to the coil.