Tried taking battery off and on. Checked some cable connects. Hmm..??
You have to turn them on thru the display buttons. And, some of the headlights have a on/off position as well. My 'Runner had one. If this info doesn't help make sure the lights are connected in the looms. My 'Mini ST had the headlight unplugged when I got it (easy fix) and then I accidentally disconnected the rear light when working on the rear wheel. If the lights work the same way as my Runner, when on hold the middle and upper buttons at the same time and the lights (with the icon on the display) will come on.