Is there a way to configure the wireless keyboard to control the keyboard light?
You would think this would be a simple task, such as simply designating a shortcut to a specific key combination for this action from System Preferences, but unfortunately it's not an option. You may have noticed that the actions themselves (dim, increase brightness, toggle backlight on/off) are not included in the 'Shortcuts' list in 'System Preferences > Keyboard > Shortcuts' and therefore there isn't a way to configure them natively within the settings/preferences of OS X/macOS. 

I have heard of a third party program called LabTick that has helped to resolve this issue with users in the past, but it was developed for older operating systems and warns against it being unstable on a newer OS. I have confirmed the instability myself by installing it on macOS Sierra 10.12.2; the first time I launched it, it quit unexpectedly while trying to configure the shortcuts. When I was finally able to configure the shortcuts, they did not work for me even after trying multiple different key combinations.