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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 07-14-2011, 09:27 AM   #1
vadim
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Join Date: Feb 2009
Location: Ashburn, VA
Posts: 98
My Ride: 08 E92 335i, 05 325i
Lightbulb Flickering retro HID cure w/o LCM reflash

Just completed fitting Morimoto mini H1 HID from TRS to stock ZKW halogen lamps.

http://www.theretrofitsource.com/pro...roducts_id=221

The car is not (yet) coded for Xenon, hence flickering/bulb-out warnings on the dash.
However, the headlights only flicker with the engine running, while being steady otherwise.

The solution is simple: put a capacitor to the low beam wires parallel to the ballast.

I used 10000uF 35V electrolytic capacitors from West Florida Components. They sell them for $1.80 each.

http://www.westfloridacomponents.com...Category_Code=

Mounting the caps is easy, there are two barrel-like spaces right below the headlights. See the pictures attached.

*** Note that these are electrolytic capacitors, so follow the correct polarity when hooking them up. ***
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Last edited by vadim; 07-14-2011 at 09:43 AM.
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Old 07-15-2011, 05:51 PM   #2
TerraPhantm
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Join Date: Feb 2008
Location: Mountain Top
Posts: 5,898
My Ride: 2005 M3 Coupe
Quote:
Originally Posted by vadim View Post
Just completed fitting Morimoto mini H1 HID from TRS to stock ZKW halogen lamps.

http://www.theretrofitsource.com/pro...roducts_id=221

The car is not (yet) coded for Xenon, hence flickering/bulb-out warnings on the dash.
However, the headlights only flicker with the engine running, while being steady otherwise.

The solution is simple: put a capacitor to the low beam wires parallel to the ballast.

I used 10000uF 35V electrolytic capacitors from West Florida Components. They sell them for $1.80 each.

http://www.westfloridacomponents.com...Category_Code=

Mounting the caps is easy, there are two barrel-like spaces right below the headlights. See the pictures attached.

*** Note that these are electrolytic capacitors, so follow the correct polarity when hooking them up. ***
Unfortunately that spot is used for the headlight washers in the cars that came with them. IMO coding is the better way to go, but this is still a decent solution for those who can't for whatever reason
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Old 07-16-2011, 07:22 AM   #3
vadim
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Join Date: Feb 2009
Location: Ashburn, VA
Posts: 98
My Ride: 08 E92 335i, 05 325i
Quote:
Originally Posted by TerraPhantm View Post
Unfortunately that spot is used for the headlight washers in the cars that came with them. IMO coding is the better way to go, but this is still a decent solution for those who can't for whatever reason
Coding will follow; it is just that the lights needed to be usable in the meantime. The capacitors won't hurt with the coding done, either.

As for the place, they don't necessarily have to be mounted there, of course.
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Old 10-31-2012, 10:13 PM   #4
Nick_M3
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Join Date: May 2012
Location: Spokane WA
Posts: 190
My Ride: 2005 325ci
Quote:
Originally Posted by vadim View Post
Just completed fitting Morimoto mini H1 HID from TRS to stock ZKW halogen lamps.

http://www.theretrofitsource.com/pro...roducts_id=221

The car is not (yet) coded for Xenon, hence flickering/bulb-out warnings on the dash.
However, the headlights only flicker with the engine running, while being steady otherwise.

The solution is simple: put a capacitor to the low beam wires parallel to the ballast.

I used 10000uF 35V electrolytic capacitors from West Florida Components. They sell them for $1.80 each.

http://www.westfloridacomponents.com...Category_Code=

Mounting the caps is easy, there are two barrel-like spaces right below the headlights. See the pictures attached.

*** Note that these are electrolytic capacitors, so follow the correct polarity when hooking them up. ***
Sorry if this sounds dumb but I'm a newb. How did you connect the wires to the capacitors and how did you then connect that to the wire harness.
Detail please
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