Stuck in a factory all day is not the place to be when you want to go find a cache, so lets bring the caching to the factory.
THIS IS A NIGHT CACHE.
You need the colours from the sign to find the cache, the colours are not visable during the day, the sign turns on and off with a light sensor.
The caches coordinates are S37 48.AB E144 52.C
If the outside ring of light of the sign flash A = 1 , If they don't flash A = 2.
If APEX lights up
Blue B = 85
Green B = 31
Red B = 27
Yellow B = 02
If BELTING lights up
Blue C = 813
Green C = 822
Red C = 843
Yellow C = 923
With the correct coordinates the cache is a short walk from the sign. Cache is a small sistema contaner with a log book and room for some small swaps. Beware of working Muggles who could appear from anywhere.