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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 12-24-2008, 02:57 PM   #1
busyguy360f1
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2001 BMW 330ci Coupe LED Tail Lights

I am in the process of compeletely rebuilding/modifying a previously neglected 2001 330ci coupe, and have a set of DEPO LED Tail Lights that will be going on after the body work. My question is, I have read many posts and comments about needing resistors and/or an LCM Reflash once the LED sets are installed for many 2002 models, but have not been able to isolate exactly what I need to do to make these work correctly with my 2001, so there are not blinking issues or Tail Light-Out Indicators present. Does anyone know for sure? I have extensive experience with electronics installations (over 10 years), so feel free to be as technical as needed.
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Old 12-24-2008, 04:07 PM   #2
KriTiKaL AspecT
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You will need resistors and capacitors. I saw a very good and technical write up by an EE who was able to fix the issue. Off the top of my head I think you will need three (Stop,parking,turn) ~6ohm 50w resistors for each tail and caps too. It will require some work. I'll try to find the info.
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Old 12-26-2008, 10:55 PM   #3
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did you buy them recently? if so, you should be fine. the newer ones have fixed most of the warnings issues. the reflash only applies to OEM LED tails.
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Old 12-27-2008, 02:20 AM   #4
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Like said above, the newer build tails have been "updated" and should work.


You wont know 100% until you plug them in and fire them up--no need to fully install them to know.
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Old 12-27-2008, 01:42 PM   #5
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You may have trouble with the DEPO versions as their resistor setups were not compatible with all cars so some cars got bulb out warnings.
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Old 12-27-2008, 08:51 PM   #6
busyguy360f1
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Okay, thanks everyone. I suppose I will pick this back up if I have issues after I put them in once the body work is done. I was just seeing if someone knew the exact impedance the tail light monitors look for and if needed, which capacitors may be required to prevent blinking/flickering issues, so I could be prepared in advance. Thanks again!
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Old 10-08-2009, 11:58 AM   #7
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Mike,

I did a write up about the install for the Eagle Eyes LEDs we carry. It's plug and play and could not be easier.

http://forum.e46fanatics.com/showthr...&highlight=LED
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Old 10-09-2009, 01:06 AM   #8
dicinya
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I purchased these taillights for my coupe last year, and just recently within the week only on the right hand side on the turn signal section I have led's going out one by one. I only have 6 led's left Im not sure as to why this is happening. Maybe the resistor is going bad? or just a defective part within the unit.

how would someone go as to buy the proper led's to replace the bad ones or get a new resistor. Im wondering if replacing the led's is possible at all or its just one fixed unit.
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Old 06-07-2012, 11:11 PM   #9
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you can wire multiple LEDs and use one resistor. usually it's like 4 LEDs in the row maximum (dependent on the LED used). you just need the specs of the LEDs and some math to figure out what size resistor you need.
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