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Old 28-07-2016, 10:41 AM   #1
bidderman1969
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LED headlight bulbs

i know a lot of new cars are now coming with LED headlights, so was wondering if anyone is running aftermarket LED bulbs? i remember a discussion about this a while ago, and it was the beams not being unto the halogen bulbs that seemed to be the main bugbear of them back them, so, are they any better now?

if so, are there a type to go for, and ones to avoid? anyone have a pic of their own LED headlight bulb for reference, maybe the way they are designed?



like these?

http://www.ebay.co.uk/itm/2X-H7-CREE...oAAOSwoudW68Md
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Old 28-07-2016, 10:45 AM   #2
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I had Cree LED dipped beams in my last 407. They looked good, and worked pretty well. They did however cause very bad interference on the radio.
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Old 28-07-2016, 10:46 AM   #3
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http://www.ebay.co.uk/itm/72W-12000L...1%26rkt%3D1%26
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Old 28-07-2016, 10:47 AM   #4
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Quote:
Originally Posted by PugIain View Post
I had Cree LED dipped beams in my last 407. They looked good, and worked pretty well. They did however cause very bad interference on the radio.
is that what those "extra" cables are for, in the pics? the cables with a block in the middle of them?
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Old 28-07-2016, 10:56 AM   #5
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Interested in seeing how this progresses as I've fancied some for a while too. I have LED sidelights already, and am planning to replace the whole rear light clusters with plug 'n' play LED units soon, but as for LED headlight replacement bulbs, I've yet to find anything that looks like it won't throw a canbus dash error light up.
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Old 28-07-2016, 11:41 AM   #6
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Interesting thread. I've got Cree sidelights in the Caddy Maxi and they look awful next to the halogens.

IME if you get decent Canbus rated LEDs, they shouldn't throw an error (the cheaper ones always do!). I can only imagine it being similar with headlights.

Any clarification on the legality of doing this on a car designed for halogens? Not trolling but can't help but think about all the issues with retrofitted xenons.
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Old 28-07-2016, 12:01 PM   #7
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Quote:
Originally Posted by bidderman1969 View Post
is that what those "extra" cables are for, in the pics? the cables with a block in the middle of them?
The ones I had were like this


I assumed the little black box was like a ballast. Sort of like HIDs have.

And no that picture was not taken with a potato. It was in fact taken with a slightly elderly courgette.
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Old 28-07-2016, 12:14 PM   #8
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LED sidelight bulbs are one thing, but for retrofit to normal projector (halogen) main/dipped beam forget it.

Halogen projector headlights are designed to take a very specific light source and focus it precisely in a specific area, so it lights up the part of the road that you need it to. Whilst they may be much brighter and far more energy efficient, LED bulbs do not emit the correct pattern of light to allow the headlight to focus it, so you get a scattered beam that a: doesn't light up the road properly and b: dazzles any other road users unlucky enough to be coming towards you.

They might look great when fitted, but you'll annoy the hell out of everybody and will have difficulty where there is no street lighting. You also won't get through an MOT or a police spot check as the bulbs will not be e-marked and so are not road legal, although I am aware that that doesn't seem to matter to many people.
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Old 28-07-2016, 12:24 PM   #9
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^^^ That's exactly what my concern was in my comment.
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Old 28-07-2016, 02:32 PM   #10
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I've been running LED mains, dipped and sides on my Ds3 for about a year. Made an amazing difference! The headlights need slight adjustment on the beam height but other than that been great. Theyre canbus and have the ballast built into the unit themselves. I'll get some pics later

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