NASA Saturn V # 21309
To get the colors of the engine plume correct, the four outside engines use a trans-red plate (on top of the orange shield) while the center engine uses a trans-light blue plate.
5x pico LED's, some adapter boards, an IR Lighting Effect Controller, and a small battery pack. The four outer engines (orange) have a flicker effect, the center engine (blue) is solid on. To get a clean install, I cheated a bit and used a 7/8" drill to go through the 'stud stack' so that the wire would be routed on the inside. Happy to answer any questions.