HeadLight Assemblies | Purpose | Types & Parts Of Headlight Assemblies?

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Categories: Truck Spare Parts

What is a headlight or headlamp?

Headlamp or Headlight or headlight assembly in an automobile vehicle are the set of lights (generally two – left and right) that are affixed in the front of the vehicle and illuminate for assisting the driver in viewing the traffic and the road ahead. Headlamp is the device that is attached and headlight is the beam of light produced from the headlamp.

Purpose of headlights?

Headlights are the most important part of the vehicle as they assist the driver to drive the vehicle in the night or dark light. Without headlights, the driver would be driving the vehicle without knowing where he is driving and other vehicles on the road would also not know about the vehicle. With the vehicle speed limits increasing due to better road infrastructure – highways, footpath, better roads etc head lights play an important role during night or dark light.

Position of head lights?

Headlights are affixed in the front of the vehicle for assisting the drive in viewing the road and traffic ahead. One head light is on the left and one headlight is on the right. SOme vehicles have headlight attached in the front like a halogen light with the bonnet or bumper. 

Types of headlights?

Headlights are in different shapes and sizes depending on the design of the vehicle and the preference of the vehicle manufacturer. They are generally in rectangular or round or square shape. New generation vehicles have headlight that are fancy shaped like – curved from one or two corner,  

Illumination method & high/ Low beam

The method of illumination of the headlights differ widely depending on the price point and usage. There are following ways headlight are illuminated:-

  1. Halogen light (Conventional lighting mechanism)
  2. Normal LED (Widely used)
  3. SMD LED (widely used)
  4. Xenon (Future)

Headlights also have an important functionality in them of high beam and low beam. In High beam, the direction of the headlight goes a little up and the driver can see far ahead and in Low beam, the direction of headlight is downwards and the driver comparatively cant see far ahead.

Parts of a head lights?

Headlamps consist of a lightbulb, the electrical wires that carry current to the bulb, a reflective mirror and the protective surface made of glass or plastic behind which the bulb rests. 

  1. Bulb – This is the Halogen bulb or LED or xenon light that glows when the driver switches on the headlight from the driver seat. THere are different varieties of bulb available – H1, H3, H4, H7, H8 etc. These bulbs come in different wattage and voltage.
    Attach some photos
2164H4 BULB [P 43T] 90/100WATT 12VOLT
2165H4 BULB [P 43T] 90/100WATT 24VOLT
2166H4 BULB [P 43T] 100/130WATT 12VOLT
2167H4 BULB [P 43T] 100/130WATT 24VOLT
2168H4 BULB [P 43T] 120/150 12VOLT
2169H4 BULB [P 43T] 120/150 24VOLT
2170H4 BULB NIGHT [P 43 T] FIGHTER 12VOLT
2171H4 BULB NIGHT [P 43 T] FIGHTER 24VOLT
2172H3 BULB 12VOLT
2173H3 BULB 24VOLT
3074XENON HALOGEN BULB H-1 12V
3075XENON HALOGEN BULB H-7 12V
3076XENON HALOGEN BULB H-8 12V
3077XENON HALOGEN BULB H-11 12V
3078XENON HALOGEN BULB H-27 12V
3079XENON HALOGEN BULB 9005
3080XENON HALOGEN BULB 9006
3707XENON HALOGEN BULB H-7 24V 100 w
2275BULB 1141 12VOLT
2276BULB 67no 12VOLT
2277BULB 1016 12VOLT
2278BULB 1176 12VOLT
2279BULB 1141 amber
2280BULB 1141 cross pin
2281BULB TD 12 VOLT
2282BULB 1141 24VOLT
2283BULB 67NO 24VOLT
2284BULB TD 24 VOLT
  1. Headlight Wire holder – To link the bulb with the electric source, wire holder is used. According to the model of the headlight and bulb, headlight holders are of different types.
    Attach some photos
2298head light holder [1.5mm FINOLEX WIRE ]
2299head light holder [2.5mm FINOLEX WIRE]
2703HEAD LIGHT HOLDER BOLERO TYPE 3
2704head light holder APE PIAGGEO
2799head light holder H1
2800head light holder H7
2801head light holder marcopolo
2802head light holder alfa champion
2856HEAD LIGHT HOLDER BOLERO TYPE 2
2931HEAD LIGHT ASSEMBLY INTER DI 3 PIN HOLDER RIGHT&LEFT DRL
3005head light holder H-8
3006head light supporting holder bolero
3021head light holder 3 pin [regular ]
  1. Mirror reflector – One bulb, together with the surrounding mirror reflector of very specific shape, aims the light to the street up to a certain line, and not at all above it, where other drivers eyes are. The other one just shines lots of light ahead, for situations where you can be sure nobody is irritated. So the mirror using the principles of physics and lights, ensures that light from the headlight doesnt go into the other driver’s eyes. 
  1. Outside case – Case holds the headlight and the hard surface that protects the mirror. Also using nuts & bolts the case is attached to the body of the vehicle so that it cant be dismantled easily.