It would be SO nice if Lumintop would let the user switch the tail cap LED on or off in the UI menu. It would then retain the feature and everyone could be happy. I think disabling it by loosening the head kind of defeats the purpose of buying a clicky, right?
I think it would have to have a dedicated fet and a free mcu pin to do that in the UI. The tailcap gets power by bypassing the driver.
A simple DIP switch could be installed in the tailcap if they did ever want to add a way to turn the tailcap on or off.
https://www.newark.com/e-switch/kae01sggt/dip-switch-1pos
[quote=moderator007]
I think it wuld have to have a dedicated fet and a free mcu pin to do that in the UI. The tailcap gets power by bypassing the driver. A simple DIP switch could be installed in the tailcap if they did ever want to add a way to turn the tailcap on or off. “https://www.newark.com/e-switch/kae01sggt/dip-switch-1pos”:https://www.newark.com/e-switch/kae01sggt/dip-switch-1pos-spst-slide-smd/dp/61W9693?
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Both options sound like they would increase parts or productions costs too much to be practical in a $20 light? Oh well...
I just e-mailed Lumintop asking if I could exchange my LED tail switches for non-lit versions. I also suggested making the tail switch light user-selectable. 
THIS! My lumintop tool 2.0 UV tailswitch is lighted. I twist the head when finished using the light, but other people forget (and use my light). I don’t want to removed it, sometimes that feature is useful.
Very satisfied otherwise…