For some reason I am not getting any blue backlit on the chrono/clock. I have looked for an hour already what the culprit is. Turned on max integ lights, flood lights, ambient light, storm light. The light that controls the blue backlight of the autopilot panel but the clock stays black.

the clock background light is indeed controlled by the INTEG lights potentiometer. If that doesn't do something, there seems to be a bug.

I can't tell you what it is though unfortunately. For me it works normally.

Even though it doesn't exactly work like it's supposed to, I can't quite see the disadvantage... The clock and Chrono works fine without it.