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Lighting Forum
Angel Eyes, DDEs, lighted rings, Clear Turn Signals, LEDs, Xenon, HID, or Bi-Xenon. If it lights up and you want to discuss it, post here!

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Old 03-07-2016, 07:22 AM   #1
cs33988
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Flickering Headlight Issue

I have searched on this thread and come to the conclusion that this problem is most likely the ignitors or ballasts. The bulb is new in addition to the 3 wires (red, brown, green) that are troublesome. Any insight/diagnosis would be awesome. Thanks in advance!

I have adaptive xenon headlights. Car is an 05 325ci convertible (facelifted coupe).


Last edited by cs33988; 03-07-2016 at 07:25 AM.
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Old 03-08-2016, 08:44 AM   #2
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Did you have a chance to swap ballasts? If the problem follows then get a new ballast Also check your tail light grounds although they should be ok
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Old 03-09-2016, 11:48 AM   #3
cs33988
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I have not tried to swap them yet. Is this more likely a ballast issue over a igniter issue?
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Old 03-09-2016, 04:49 PM   #4
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If the wiring is good then I would start with the ballast. It's the easiest thing to swap out anyways (just two screws at the bottom)
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Old 03-16-2016, 06:17 PM   #5
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Solidjake,

Thanks for your help. I swapped the ballasts from the driver side to the passenger side. The issue remained on the passenger side. I also swapped the ignitor from the driver side to the passenger side and the issue remains on the passenger side. I am very confident in the wiring to the ignitor since I resoldered it when I took the headlight out. I also tried a new bulb in the passenger headlight to no avail. Any other thoughts? Recommendations?
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Old 03-17-2016, 02:09 PM   #6
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I'.m having the exact same issue on my 2004 M3 convertible. I have LED tail lights, does the ground issue in the tail light apply to the led lights or just the bulb tail lights? I replaced both of my headlight bulbs because they had become very dim, the new ones are amazing, but with the new Phillips bulbs installed, I started to notice the obvious flicker in the right headlight bulb. It is sporadic, I can drive for 20 minutes with no problem, then it will start to flicker, even go out and I get the dead headlight warning on the dash cluster. This is resolved by turning the headlights off and then back on. The light works but eventually starts to flicker again. I took the ballasts off and switched them to opposite sides but the flicker is still isolated to the passenger side bulb. Drivers side is fine.
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Old 03-18-2016, 08:11 AM   #7
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I have the SAME EXACT problem w/ my pass side headlight.. started happening yesterday... 06 330ci ZHP w/ adaptive headlights


Quote:
Originally Posted by Shadanigans View Post
I'.m having the exact same issue on my 2004 M3 convertible. I have LED tail lights, does the ground issue in the tail light apply to the led lights or just the bulb tail lights? I replaced both of my headlight bulbs because they had become very dim, the new ones are amazing, but with the new Phillips bulbs installed, I started to notice the obvious flicker in the right headlight bulb. It is sporadic, I can drive for 20 minutes with no problem, then it will start to flicker, even go out and I get the dead headlight warning on the dash cluster. This is resolved by turning the headlights off and then back on. The light works but eventually starts to flicker again. I took the ballasts off and switched them to opposite sides but the flicker is still isolated to the passenger side bulb. Drivers side is fine.
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Old 03-18-2016, 08:41 AM   #8
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fixed....hopefully

I removed the ballasts and looked at the wires under the ballast. They were all cracked and peeling. The insulation was falling apart on each wire......must be from the heat of the ballast. Here is what i did. I found replacement wiring harnesses on ebay and replaced both the driver and passenger side. Then i went to the trunk, removed the tail lights on both sides and did the ground wire fix. I finished last night around midnight. Ill know more tonight when im driving home from work, but evrything worked right off the bat. I will let you know if this fixed it. This is what the wires looked like.

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Old 03-18-2016, 11:11 AM   #9
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that is insane! there is no reason it should crack up like that...
where did you find new wiring? I can't find anything on ebay thats not used and not off of a 10yr + car.

it still looks like there are no broken wires and nothing loose. does anything look loose in there? something a little elec tape can fix?
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Old 03-18-2016, 11:39 AM   #10
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The harnesses i bought were used. The wires were in great shape and the fix seems to working good. Now i'm no engineer, and maybe the wires would have been just fine all cracked up like that, but it seemed like the smart thing to do. No way to get in there and cover the wires with electrical tape. I did cover the exposed wire with a layer of electrical tape before I put the ballast back on. Maybe this will help future heat issues.

Last edited by Shadanigans; 03-18-2016 at 04:20 PM.
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Old 03-18-2016, 11:41 AM   #11
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Such bs with those cracks. Imagine the positive and ground touch? Bam, electrical problems galore
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Old 03-18-2016, 12:17 PM   #12
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i imaging the problems were prob in the connectors themselves.. did you see any burned connections?
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Old 03-18-2016, 01:57 PM   #13
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No burns on the connectors, i think this is a design problem. These ballasts are mounted under the wiring harnesses. The heat from the ballast has nowhere to go except into the wiring harness.
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Old 03-18-2016, 02:22 PM   #14
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What seller did you get the harness from?
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Old 03-18-2016, 02:26 PM   #15
ikalinin
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yes, i too want to see the harness that you replaced?
something like this?
http://www.ebay.com/itm/BMW-XENON-HE...NWy4uj&vxp=mtr
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Old 03-18-2016, 02:53 PM   #16
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The seller name is savabill48, fast shipping, very reasonable price. I think it was under 15 bucks for the complete harness including shipping.

Listed as e46 m3 left side xenon control bracket wire harness.
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Old 03-18-2016, 02:56 PM   #17
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Like i said, my drive home from work takes about 20 minutes. Ill know if the problem is resolved tonight. If i dont see any flicker i will be relieved......any flicker then its time to look at the ignitor.
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Old 03-18-2016, 03:16 PM   #18
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I just searched ebay for bmw e46 xenon control bracjet wire harness and found 4 listed. One was a brand new part.
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Old 03-19-2016, 04:14 PM   #19
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I had a different issue. You should all check here first. Where you replace the bulb, there are some wires with a connector. Well, its really brittle, and the wires were 'cut'. So I cleaned it up, soldered back together and covered with new elec tape. Problem fixed. Check here first guys. Im sure thats the issue.

Here are some pics
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Old 03-19-2016, 06:00 PM   #20
Shadanigans
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Is that the wire set that plugs into the ignitor? I think what it comes down to is there is a poor ground connection......somewhere.......and you have to find it. My repairs worked well. No flickering last night on the ride home.
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