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Thread: H7 Halogen to LED bulb upgrade

  1. #11
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    The conservation of energy principle states that energy gets converted from one form to another, in this situation electrical energy is converted to heat and light in differing ratios depending on the light-generating source. Watt is the unit of electrical energy (not of light though). The 25W of electrical energy consumed by the LED globe is converted to heat energy and light energy so if the same amount of light is produced as by a 55W halogen globe then the heat will be less than half of that from the halogen. However as the light produced by the LED is greater then the halogen, the heat component will be proportionally less again.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  2. #12
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    Before jumping ship to a white light produced by LED or HID lights here is something to think about.
    A few years ago I won a set of FRYLYT spotties, they are a halogen globe and I already had HID which I was happy with.
    I was told the FRYLYT would be better and check them out so I did and they are.
    Its all to do with the way your eyes see different colour light spectrum and how that makes it harder to see different colors with a white light.
    The whiter the light the less you see brown and red tones in the distance , what colour are most Australian native animals?
    I have spoken to a few guys that go hunting and they all confirm that animals are much easier to spot with halogen lights rather than led or hid lights.
    When I swopped over the lights I did some research on light spectrums and found this to be true according to all the latest resaech
    Discovery 1 4.6, true trac front and rear, superior engineering arms,old tourer now bush toy
    Discovery 4 3.0 HSE MY13 ECB Bull bar, winch, spot lights, aux fuel tank, Kaymar rear bar, duel wheel carriers, 18 tuff ant wheels 265/65/18 BFG KO2's for play

  3. #13
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    The 4000K versions should be more useful than the 6200K versions away from the suburbs.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi, RTK base station using LoRa

  4. #14
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    it also depends on each person. different people see colours differently. its not a one size fits all.
    Current Cars:
    2013 E3 Maloo, 350kw
    2008 RRS, TDV8
    1995 VS Clubsport

    Previous Cars:
    2008 ML63, V8
    2002 VY SS Ute, 300kw
    2002 Disco 2, LS1 conversion

  5. #15
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    I'd need to check the latest, but up until recently at least anything above 4300K wasn't legal for on road use. I'm seeing some newer vehicles that appear to have a higher colour temp as OE so I wonder if that's now been changed with the emerging prevalence of factory-fit LEDs? Personally I think that anything much over ~4500K is too blue and both washes out and glares with high fatigue. I'd rather have good quality lighting than bulk brightness lighting.

    Maybe I'm missing something here. I've got early D2 factory headlights in my D1a (plug and play) and good quality, ADR legal Philips incandescent bulbs (std wattage, +130%) and I really don't feel like I need aux lights or anything upgraded. I actually prefer them to the HIDs in my RRS. Maybe it's a personal preference thing?
    DiscoClax
    '94 D1 3dr Aegean Blue - 300ci stroker RV8, 4HP24 & Compushift, usual bar-work, various APT gear, 235/85 M/Ts, 3deg arms, Detroit lockers, $$$$, etc.
    '08 RRS TDV8 Rimini Red - 285/60R18 Falken AT3Ws, Rock slider-steps, APT full under-protection, Mitch Hitch, Tradesman rack, Traxide DBS, Gap IID

  6. #16
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    Like everything it does come down to personal preference but in my experience good quality halogen lights are less tiring on the long hauls, the white light does seem to be better when just comparing different lights for a short period but in my opinion that changes after spending more than half an hour scanning the side of the road for skippy. 3 hours into a night drive and the difference is significant
    Discovery 1 4.6, true trac front and rear, superior engineering arms,old tourer now bush toy
    Discovery 4 3.0 HSE MY13 ECB Bull bar, winch, spot lights, aux fuel tank, Kaymar rear bar, duel wheel carriers, 18 tuff ant wheels 265/65/18 BFG KO2's for play

  7. #17
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    Quote Originally Posted by DiscoClax View Post
    I'd need to check the latest, but up until recently at least anything above 4300K wasn't legal for on road use. .....
    That would have been because halogens natively produce a lot of UV, and you don't want UV light blaring directly into your eyes over a long period of time.
    So the halogen globe has to have the UV component attenuated in some way.
    Kelvin rating can roughly be translated into the various light specra, where a colder K value equated to more blue light emitted from the globe.
    With filtration, you get leakage(unless cost is unlimited!) and with halogen globes cost is a major factor. So the filtration(ie, the product that we see as the glass section of the globe) has to be cheap enough to buy.
    So the regulations would have been set up in that manner because for a halogen globe to produce colder than 4300K almost certainly meant that it was also emitting a lot of UV.

    All that changed when LEDs became a viable option for vehicle headlights too.
    LEDs don't really need 'filtration' as such. They produce LED chips that emit light specrum with quite high accuracy. So the overall cost benefit is easier to implement.

    Cheapo Chinese LED manufacturers just produce copies of what LED chip makers design and may not produce exact copies of those LED chips.
    So you can set an LED chip to produce higher Kelvin values(ie. more blue) but still produce little to no UV emissions.

    I've always found that warmer light fatigues my eyes .. in a sense makes me drowsier.
    Whiter/bluer/greener light lets me see more detail, keeps me awake much easier .. so on 12+ hour drive I feel even less 'fatigued' then I used to before I started using LEDs.

    I do the same at home too. All my house lights are basically white light. Only the bedrooms have warm lights(still using CFLs).
    Best change I have done to my living room has been to switch to white(6000K+) globes, which helps me read now.
    The reactions from my family are interesting tho:
    Dad(84), brother, and kids like them. But my sister can't stand them. She reckons too harsh.
    Arthur.

    All these discos are giving me a heart attack!

    '99 D1 300Tdi Auto ( now sold :( )
    '03 D2 Td5 Auto
    '03 D2a Td5 Auto

  8. #18
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    Why choose FYRLYT? - Light quality beyond LED & HID!
    Some good reading regarding how different lights work and how color ranges affect what you see
    Discovery 1 4.6, true trac front and rear, superior engineering arms,old tourer now bush toy
    Discovery 4 3.0 HSE MY13 ECB Bull bar, winch, spot lights, aux fuel tank, Kaymar rear bar, duel wheel carriers, 18 tuff ant wheels 265/65/18 BFG KO2's for play

  9. #19
    geoffmc is offline Fossicker Silver Subscriber
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    Thanks everyone for the informative, robust conversation. I did some research beforehand and for me, the brand, design and rating was what i was looking for. I have tested how much heat they emit, both from a lens and heatsink perspective, as i had been driving for almost an hour when we got home. The LED's are definitely cooler temperature wise and the type of heatsink works well and is not as warm as i was anticipating or had planned for.

    The reason i chose a screw on heatsink block at the base of the bulb, against the strap type, was that it is a fixed unit and not floating. Any mods i install, I like to have fastened safely, with minimal chance of movement (call it a personal choice).

    I ha thinking of installing similar bulbs into the high beam, as they are H7 as well, but not in any rush. I'm really happy with the result and they suit my needs.

    cheers
    Geoff
    D4 TDV6 MY13 White - GONE

  10. #20
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    I’ll be interested to see how long they last. I have bought so many 20,000-50,000 hour LEDs and barely get 1000 out of them. That’s from cheap Chinese to band names.
    2010 TDV6 3.0L Discovery 4 HSE
    2007 Audi RS4 (B7)

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