Headlights are used during times in which it may be hard to see. In most states, headlights must be used when driving from dusk before sunset to sunrise.
That means that you're going too fast to stop by the time you see something in front of you. By the time you see it in your headlights, it's too late.
Not usually, but you can tint your headlights red (NOTE: This is against the law)
I would replace the headlight switch as Ford has had their share of these problems.
In most provinces the largest legal tire is 54" however your bumper must not exceed 33" and headlights not 53-54"inches from the ground
Answer I had a similar problem when I put a CD player in my 92 explorer. The problem was that somehow I used the hot wire from the headlights. I simply just rewired the power wire and problem solved. First of all I would check the power source. If you didn't use a wiring harness some of the 12v power is discontinued when you turn the headlights on. Using either a voltmeter or testlight check for a constant power source. THE MOST COMMON CAUSE OF THIS IS CONNECTING YOU VEHICLES DASH LIGHT WIRE TO THE GROUND ON THE STEREO
You must have two headlights, all other lights are in fact not headlights and just additional light aids.
Motor Vehicle law states that headlights MUST be used after sunset. IN some states they must be used all of the time, when it's raining or snowing or when conditions require it. If you have an accident because you choose not to use your headlights, your insurance company will probably not pay anything for it.
Concave mirrors are used in headlights.
Headlights need to be used at night, when it is dark, and when windshield wipers need to be used.
You would not drive it at night or when the law says you must display headlights.
5PM to 6AM
Any time after six o clock Laws will vary a bit between jurisdictions, but this version from the State Of New Jersey is pretty common; "Proper use of headlights is critical to safe driving. Headlights must be used between one-half hour after sunset and one-half hour before sunrise. Headlights must also be used when visibility is 500 feet or less, when using windshield wipers (during rain, snow and ice) or when encountering fog, mist, smoke or other factors that reduce visibility." Note that many semi trucks will use their headlights 24/7. It's a safety issue. Being seen is important.
Headlights
Generally 30 mins before sunset
30 minutes before sunset
When visibility is 300ft
Just at sundown, or in fog and rain.