I know a caveman, ran the light from generator power, which somehow stopped running, the light obviously went out and a DUI imbecile ran over and destroyed said unit.
I would suggest reflective tape on the generator AND on a tall pole.
Good point! Running the warning light off the generator probably isn't the best idea.
But reflective tape on a pole should work well.
I have large rolls of blue, red, white, and Orange reflective tape by 3M in my shop but it's a long way from Iowa.lol
It is certainly a good idea to mark it.
Too many idiots out there who would run it over.
They do make electric flashing lights that run on batteries and some are rechargeable. Got one from the safety fair at work a few years back that they called an electric road flare. But as was said if it fail while your sleeping it could be bad.
Reflective tape can't run out of power.