How do you turn the light on a set of digi cools?
Eat a slice of Humble Pie.
"In order to turn on the green backlight you will need to push on and
hold down the units button for 4 seconds. This will then turn on the
backlight for the duration of the 15 minute on cycle."
That is straight from the Digicool manual.
"A negative attitude cancels out positive skills."