He said:
I like to keep the VFD dimmer at 80% in the day (because I can see it fine in daylight) and 90% or 100% with headlights on. I am trying to configure the button LEDs to comparable illumination levels.
That doesn't sound like he doesn't want it to dim to me. It's, once again, an odd notion coming from FireFox, but ....
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Bitt Faulk