turning backlight on????

[zxrjohn14]

this may be a daft question to some, but i'm new to motec.
i have an sdl dash on my bike and it has no light on.
i have gone into the software (dash manager where it has tabs PRACTICE, WARM-UP, RACE AND BACKLIGHT) and it says it is on and at 100% brightness, but is not on on the actual dash.
am i missing something? do i go to another bit of the software to turn it on?
i bought the bike with it all on and set up so i don't know if its ever worked or even has a light.
thank you for any help
john

[IJ.]

Some are sold with no backlight (cheaper at the initial purchase) there's a thread here on converting it to backlit but it's involved and expensive.