So far on the experimental version of DayZ, I have been unable to turn on a universal light when it is on my tactical helmet.

I've tried swapping out the helmet, swapping the light, the battery, removing the NVGs attached, and using the same batteries/lights when attached to other guns and they work fine.

My light controls are default. Hold L for NVGs, tap L for light.

I've tried swapping controls, and other actions that require taping L work just fine (Headlights on car, etc etc)

I am running the most current version of DayZ Exp.