castigan
Posts: 8
Joined: Fri Jun 23, 2017 2:14 am

Re: LED Low Beams

Fri Jun 23, 2017 10:43 am

kc1 wrote:Are these the ones in the video?:


http://www.philips.co.uk/c-p/12901HPX2/ ... ifications
these are nice, but they seem to be single sided only, also i find you pay a lot more for the name brand for the same thing (made in china)

alohart
Posts: 2142
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Re: LED Low Beams

Sat Jun 24, 2017 3:38 am

castigan wrote:
kc1 wrote:Are these the ones in the video?:

http://www.philips.co.uk/c-p/12901HPX2/ ... ifications
these are nice, but they seem to be single sided only, also i find you pay a lot more for the name brand for the same thing (made in china)
I find that products designed by a company like Philips and manufactured in China under Philips' supervision can be higher quality than products designed in China to be as inexpensive as possible and that are either sold to individuals on sites like Alibaba or to Western companies that relabel them with their own brand.

Five years ago, I installed Philips LED daytime running lights (DRL's) that were more expensive than DRL's sold on Alibaba or obviously relabeled by a Western company. These DRL's are on whenever I drive and continue to work without their LED's failing as seems to happen frequently with lower quality LED lights. Maybe I've just been lucky, or maybe paying a bit more for Philips DRL's was a smart move.

However, the Philips headlight bulbs referenced are H4 bulbs with both high and low beam LED's in a single bulb whereas the i3's high beam headlights need only high beam LED's. So one is paying for probably twice as many LED's as required and may be getting a bulb that doesn't work as well with a reflector and lens designed for a bulb with only a high beam light source.

While some of the Philips LED headlight bulbs are described as being optimized for reflectors and lenses designed for tungsten filament bulbs, it's just not possible for a LED bulb to emit its light from as tiny a volume as a tungsten filament bulb, so the light pattern produced by retrofitted LED bulbs will almost certainly be inferior to that produced by a tungsten filament bulb. The LED light color will be hotter (i.e., whiter) and the LED light intensity might be greater, but the light might not be projected where it should be. In many countries, LED retrofits are not legal because of this.
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

jadnashuanh
Posts: 5070
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: LED Low Beams

Sat Jun 24, 2017 12:12 pm

Sorry if I'm repeating myself, but to be technically legal, and pass an inspection (although I doubt you'd fail, but it's possible), a headlight bulb must have been evaluated against the DOT regulations and passed. This tests not only brightness, but also the light pattern. There are few LED aftermarket headlight bulbs that qualify. If you find one, it will likely cost more than one that doesn't.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV
Soon (hopefully!) A 2021 X5 45e will replace the above

Mito
Posts: 32
Joined: Sun Apr 09, 2017 11:55 pm

Re: LED Low Beams

Mon Jun 26, 2017 12:06 pm

Why not just get some 110% uprated Osram Njghtbreakers from Euro Car parts ?
I have on all of mine and noticed a good improvement
There are Construction and Use and Homologation issues with retro fitting LEDs and as others have said the reflectors are not always designed to efficiently distribute an LED beam the same way

teren
Posts: 1
Joined: Tue Jul 25, 2017 5:12 am

Re: LED Low Beams

Tue Jul 25, 2017 5:23 am

castigan wrote:Ive installed LED bulbs into my low beams.
pretty easy...some things to watch out for.....

1) dont buy bulbs with fans on them for cooling, the fans crap out, get ones with a decent heatsink instead.
2) buy bulbs with leds on both sides of the unit so that they send light up and down at the same time inside the light housing.
3) they are hard to hold in place as the retention clips for the normal bulbs dont fit around the LEDs as the leds are larger, i solved this buy using hot melt glue to hold the leds into the mount. (works fine)

other than that everything was quite easy, straight forward and just a little hard to get ya hands in the back of the housing to put bulbs in.
Hello,
Can you please tell me how to install solar Led lighting??
Thanks

metaflash
Posts: 6
Joined: Mon Feb 11, 2019 12:44 pm
Location: Oregon, USA

Re: LED Low Beams

Fri May 17, 2019 6:46 am

castigan wrote:
Fri Jun 23, 2017 2:35 am
Ive installed LED bulbs into my low beams.
pretty easy...some things to watch out for.....

1) dont buy bulbs with fans on them for cooling, the fans crap out, get ones with a decent heatsink instead.
2) buy bulbs with leds on both sides of the unit so that they send light up and down at the same time inside the light housing.
3) they are hard to hold in place as the retention clips for the normal bulbs dont fit around the LEDs as the leds are larger, i solved this buy using hot melt glue to hold the leds into the mount. (works fine)

other than that everything was quite easy, straight forward and just a little hard to get ya hands in the back of the housing to put bulbs in.
i partially agree with these claims... heatsinks are great but don't handle the moisture problem, heatsinks also flap around and can be noisy.

2) definitely agree with you here, I've seen some with led chips on four sides

3) i think they sell these special adaptor clips on Amazon or eBay, it's a standard issue for conversion kits on German cars

@alohart, from my understanding, LED's work much better in reflectors compared to projector assemblies but I do agree that those don't look so good lol

Source: https://www.xenonpro.com/difference-bet ... headlights
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