The device in question would illuminate these lights when the light levels fall below a certain level (IE poor light conditions).
Knowing where to put the light sensors would be something of a challenge. I don't know where they put light sensors in cars, but you could have the sun rising on the left side of the aircraft, and the right side of the aircraft in total shadow. If you mount it on top of the fuselage, with a 360 degree view, you would have to drill holes in a pressurized fuselage, have the sensor withstand 400kt winds, be capable of operating in -60C temps to +60 temps, etc, etc.
If you mount remote sensors on both wingtips, you're looking at 100's of feet of wiring = added weight = not something you need in an aircraft
You've certainly picked a tough assignment.
Rgds.
NSEU