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      01-13-2010, 02:40 PM   #1
YianniM3
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no power going to my headlight??

hey everyone

so ive had HID;s for headlights and one of them kept going out so i went to get it fixed and for some reason they couldnt fix it somehow there is no power going to the headlight but all the fuses are working fine. they told me i have to go to bmw because they have the computers. so i went to another friend i know to see what hed say and he told me the same thing that all the fuses seem fine but no power going to the headlight so now i have my stock bulbs in and i really wanted to avoid the dealer cuz my warranty is up and theyll prob charge me way to much for somthing there computer can prob fix in 5 minutes. idk basicly wondering if theres anywhere else i could prob go to that have computers like the dealers but wont cost me an arm and a leg. any advise or has this happend to anyone else before??? also its only one of my headlights that is having this problem the other side works fine.
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      01-13-2010, 03:17 PM   #2
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Don't know if he will be able to help but you can try to PM dave --> dave96dcm and see what he says.
I know he has fixed headlight problems before.

-D
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      01-13-2010, 04:15 PM   #3
Derek Zoolander
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Sounds like the ballast is bad.
Do you have OEM Xenons, or reflector housings with drop-in HIDs?
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      01-13-2010, 04:19 PM   #4
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i have OEM halogens, i dont have xenons
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      01-13-2010, 04:22 PM   #5
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Well there's your first problem. It's illegal to put HIDs in reflector housings. It also causes many problems with fried wiring/ballasts due to the excess heat.
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      01-13-2010, 06:39 PM   #6
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other people on the forums have them Mr. zoolander
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      01-13-2010, 06:40 PM   #7
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and if heat is a problem why do they only mess up in the winter because same thing happend last winter but work perfect all summer
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      01-13-2010, 06:41 PM   #8
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Quote:
Originally Posted by nixta325 View Post
other people on the forums have them Mr. zoolander
Of course, tons of people do it. Doesn't mean it's right! I would never do drop-in HIDs in reflector housings. It's risky and dangerous.

My guess is the ballast is shot.
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      01-13-2010, 07:33 PM   #9
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Quote:
Originally Posted by Derek Zoolander View Post
Of course, tons of people do it. Doesn't mean it's right! I would never do drop-in HIDs in reflector housings. It's risky and dangerous.

My guess is the ballast is shot.
I agree. And if you really want it done right, get OEM xenons.
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      01-13-2010, 08:21 PM   #10
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i understand that but now i have my stock back in and it still wont work my original question was has this happend to anyone else and is there anywhere i can go that has computers like the dealer but wont cost me an arm and a leg. in short how do i fix it
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      01-13-2010, 11:55 PM   #11
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I'm not sure about a fix but, I might have a possible explaination/clarification as to why it went out.

Plug-n-play HID kits are all the rage nowadays because you can drop them in in place of halogen bulbs and gain a ton of light output for cheap. However, doing this is actually very bad. First, halogen headlights were made for a halogen bulb. If you are to put a HID bulb in there, the intense light is not correctly controlled by the reflectors and it scatters everywhere in front of you, causing very dangerous and blinding glare to oncoming cars. This is why you see so many cars with these kits that look like their high-beams are on constantly.

Second, the wiring for the OEM headlight bulb was designed to power a 55-watt halogen bulb. A Halogen bulb is incandescent, meaning it has a filament, and draws a constant amount of juice from the wiring when it's on. Now, a HID ballast on the other hand needs to ignite the HID bulb every time you turn on your lights. This places extreme strain on the stock headlight wiring. Also, if I am not mistaken, HID ballasts need some more juice to ignite the bulbs in cold weather than in warm weather. A solution to this is to use a harness and wire the HID kit to the battery, and have your OEM wiring only act as the 'switch' to turn them on and off.

Cliff notes: The current draw from the HID kit probably messed up your wiring. Also, drop-in HID kits blind people and are illegal.
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      01-13-2010, 11:59 PM   #12
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well this great info i was gonna buy some hid for my mustang but never mind now lol.
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      01-14-2010, 08:38 AM   #13
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Quote:
Originally Posted by lopealle View Post
well this great info i was gonna buy some hid for my mustang but never mind now lol.
If you or anyone wants to read up on more as to the problems with using a hid kit on a car originally with halogens, this site is excellent:

http://www.danielsternlighting.com/t...nversions.html
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      01-30-2014, 10:34 AM   #14
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