"Pull off the roadway and activate your emergency flashers."
Should be coming out of the wiring harness on each side of the car, where the harness is fastened to the radiator support. The ground is bolted to the radiator support on both right and left sides near the headlights- on the back of the radiator support
Headlights should not be left on while the vehicle is not in use. If you are not driving, you will just drain your battery while having your headlights on.
Keep your headlights on low beam.
It depends upon driving condition (not time)
You should never over drive your headlights because you are then driving too fast to stop in time for hazards you see on the road.
Turn on your headlights and your wipers drive a bit slower than when in good weather
overdrive
Yes, when driving in foggy conditions you should use your headlights which allows oncoming drivers to see you at the earliest possible moment. However, for safety, you should not use your highbeams [bright] as the fog will reflect back much of the light, reducing your ability to see into [through] the fog.
Most states require you to turn on your headlights a half an hour (30 minutes) BEFORE sunset. (That is based on my experience, driving mostly in the Northeast.)
low beam
You should turn on your car's headlights at dusk and when it is raining. It is also a general practice to turn your headlights on when in a funeral procession. You should check with your local motor vehicle bureau, since regulations may be different in the area you will be driving.
If your headlights go out while you are driving, you can try switching to your high beams. When you get home, you can replace the bulbs.