Unfortunately the "Daughterboard" as it's become known as appeared very rarely in the first film, and when it did, there was never a clear shot of it. The majority of the "best" shots of the daughterboard from the uniforms from the first movie can be seen on the
Belt Gizmo page of the GBFans wiki.
For the daughterboard on my GB1-style uniform I made a compromise: Using one of Nick-a-tron's resin
Ghostbusters II daughterboards, I painted it to match the colour of the board from the first film:


- Whilst retaining the component layout of the stunt boards from the second film.
My Belt Gizmo build