- April 6th, 2022, 3:52 am#4968628They're not so much "lights" as they are nixie tubes, which as you can see are 7-segment numerals encased in glass which illuminated. The tubes on the screen-used belt gizmos in the first film were part of a circuit board from a Sanyo ICC-808D calculator.
The gizmos themselves weren't illuminated in any way in the movies, that's something fans have decided to do within the last decade or so.
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