I went with electronic -- as opposed to mechanical -- engine nacelle lighting in order to eliminate noise pollution generated by mechanical pieces. The difficulty is in finding an accurate set of animated nacelle lighting electronics for the 1:650 scale USS Enterprise. I am using "Madman Electronics" nacelle lighting version but will be modifying it further.
The Madman nacelle electronics kit allows for speed variability adaptation in order to match actual TOS nacelle rotation speeds, but the circuitry will have to be routed to an internal IR receiver that will work with the Mr. Flint miniaturization device functional prop. This will act as the remote control for all USS Enterprise model functions. At present, the lighting for the windows will be on one circuit, the blinking navigation beacons will operate on another circuit, and the nacelles will operate on a separate circuit. These circuits will be joined at a miniature internal controller board. The lighting effects will account for 3 of the 5 depressible buttons on Mr. Flint's device. The 4th and 5th buttons will open or close the shuttle bay doors.