AUTOMOTIVE LIGHTING SYSTEMS. Question # 1 How many light bulbs are on a modern vehicle? Taillights...
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Transcript of AUTOMOTIVE LIGHTING SYSTEMS. Question # 1 How many light bulbs are on a modern vehicle? Taillights...
AUTOMOTIVE LIGHTING SYSTEMS
Question # 1
How many light bulbs are on a modern vehicle?
Taillights – 8 Front – 6 Side - 4 Interior – 15 IP & Controls – 22 – 24 Total - 56
Lamps
Double and single tungsten filaments Filament is in a vacuum
Lamp RatingsTrade Design Design WattageName Voltage Amperage
Types of Headlights
Sealed Beam – Used between 1939 – 1975 Halogen – Bulb filled with halogen, Burns
hotter, lasts longer Composite – fixed housing with replaceable
bulb HID – High Intensity Discharge – Light
emitted by a spark
HID
Brighter Wider & deeper field
of vision Use 37% less power Last up to 100,00
miles
* As compared to Halogen bulbs
HID
Separate Ballast – produces 80v
Ark tube (bulb) –filled with Xenon gas
Electrons excite salts in Xenon gas creating the ark which produces light
Headlight Switches
Controls driving, parking and IP illumination (dimming)
Locations – On dash or steering column Separate switch for high beam activation
Low Beam Circuit
High Beam Circuit
Exterior Lighting
Taillights – Contain parking, brake, turn signals, backup, license plate lights Can be housed in one unit or in several units Incandescence bulbs or LED Separate 3rd brake light asm. - CHMSL
Side Markers – Part of parking lights circuit, makes vehicle visible from the side
Fog Lights – Can be clear or yellow, factory or aftermarket, controlled by separate switch
Interior Lighting
Courtesy Lights – Trunk, glove box, under hood, roof & floor lighting
Ip & Panel Lighting – Illuminate gauges and controls with dimmable lighting