Home » cordless-screwdrivers » How to turn the LED light on and off? How to turn the LED light on and off? Chris 29th February 2020 14 Views SaveSavedRemoved 0 How to turn the LED light on and off? Shop for Cordless Screw Drivers The LED light on your cordless screwdriver should turn on as soon you as you pull the speed control trigger. When you release the trigger, the LED light should turn off.