Today it's hard to believe, but on the first cars have no "light devices at all! Riding on the "first cars " in the days of Gottlieb Daimler and Carl Benz was very risky even in the daytime. And so to drive at night people can’t even dream. First car headlights represented simply kerosene lamps.
In 1896, just 10 years after Carl Benz was granted a patent for his first car, and only then Louis Bleriot the famous aircraft proposed to use the acetylene headlights. Similar design spotlights actively were used the locomotives!
Well known to us electric lights have been widely used in cars since the early 20-ies of XX century. Though in the model of "luxury" class they have been used even earlier: since the mid 10-ies. - Almost immediately after the invention. One of the first electric lights were fixed on Cadillac Model 30 and the legendary Rolls-Royce Silver Ghost. In fact, the first such lights were a power spotlights. There was, however, another problem: the drivers, who were traveling at night on reciprocal courses, blinded each other mercilessly. That is why very soon the first light correctors appeared, with variety of different types: lever, cable, hydraulic. Some manufacturers put the lever of a rheostat at the front desk, with the help of which the driver can adjust the brightness of the lamps.