Road legal Prius headlights upgrade, new Philips H4 LEDs or HIDs?

Discussion in 'Gen 2 Prius Accessories & Modifications' started by FXG, Nov 6, 2015.

  1. FXG

    FXG Junior Member

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    Hi John, I checked and yes it does, actually frightened a few neighbours by standing in the car's trunk with the headlights on! ;) It's a 2007 T-Spirit (56 reg). That would explain why I kept seeing normal/short range dipped-beam even with a fully loaded trunk and the knob set to maximum height. Curious idea to have this adjustment even though the headlights are automatically limited to the maximum legal beam distance/pattern?
    Anyway these LED look promising given the above pictures, I'm hoping they become available here. (I made a few more trips since then and the cars with aftermarket / non compliant LED fitted to their reflector headlights are a serious hazard)
    By the way, another legal finding I made is regarding the headlight washers. In their typical kafkaesque regulatory impulse, these are type-approved for each car, and tested on the car's headlights after subjecting them to a certain spray whose content in various salts and precisely-sized grains of sand are specified! A bit insane if you ask me... And since this equipment has not been type-approved in a any ECE compliant market for the NHW20 there is not retrofitting JDM HIDs legally either. Bother...
    PS: With regards to your comment on the beam pattern, I suspect these are US DOT headlights, which do not have the sloping cutoff where oncoming traffic would be. The tests realised by the ECE working group show that DOT & ECE compliant, properly designed LED bulbs give good results (they did not test those specific Phillips bulbs though)
     
    #21 FXG, Jan 3, 2016
    Last edited: Jan 3, 2016
  2. Britprius

    Britprius Senior Member

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    It's like pea soup the regulation gets thicker every day. I'll stay with my 33watt HID's for now as I have not had problem with the law, MOT,or people flashing me. However I do have them set conservatively. I have thought about changing my fogs for spots.
    I am also thinking of changing to a Lexus a bit of an expensive way round the problem.

    John
     
    FXG likes this.
  3. FXG

    FXG Junior Member

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    I reckon the +130% is achieved by using a thinner fillament, maybe by using a better material... I'm unsure, but the wattage should be the same and one thing's for sure, they do not last long. Those LEDs would provide a nice battery performance boost in heavy traffic at night I suspect.
     
  4. colmenedo

    colmenedo Junior Member

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    purchase and easy installation impressive, I'm afraid that the different versions did not fit our Prius as the Philips LED disassembled for parts

    [​IMG][​IMG]
     
  5. dingaling007

    dingaling007 Junior Member

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    I've spent over $600 trying to get Philips LED lights setup with my Prius. Those Ultinons with the big black heatsink are a no go with the gen2 Prius as another poster has showed. Without the heatsink properly attached the LEDS will get too hot and reduce there brightness (and life).

    I spend more money trying to create my own heatsinks with a block of aluminium and tapping a thread so i could screw it onto the LED, but due to the prius headlight housing angle i could only have a small circular heatsink that was not effective enough compared to that Philips black heatsink.

    So today I bought the newest Gen3 Philips h4 Ultinon 9000, the heatsink is smaller and circular with active fan cooling. This almost fits but fouls on the plastic ring rubber boot part.

    I will create a post shortly showing how I modified this to fit these LEDS without ruining the weather proofing.
     
  6. dingaling007

    dingaling007 Junior Member

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    Cant seem to delete posts.
     
    #26 dingaling007, May 29, 2021
    Last edited: May 29, 2021
  7. dingaling007

    dingaling007 Junior Member

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