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License plate LED flickers....

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Old Jul 28, 2009 | 11:09 PM
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Audi S4, Mercedes Benz C350 4Matic
License plate LED flickers....
Hey guys,

I have installed my license plate LEDs, but I realized that when the car is in low rpm (or lower gear), it flickers! Any suggestions?
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Old Jul 28, 2009 | 11:09 PM
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E63S || C63 || E550 Coupe || Cayenne ||
what LEDs do you use?
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Old Jul 28, 2009 | 11:12 PM
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you will need to wire a resistor to each light or get LED bulbs with a built in resistor.
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Old Jul 28, 2009 | 11:12 PM
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and is it the one with resistor built in ??

Andy
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Old Jul 28, 2009 | 11:16 PM
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Yes it has a built in resistor in it. It only flickers when the car is in low rpm (or lower gear), once you get the speed up it is fine.... very weird....
Last edited by MB_AMG; Jul 28, 2009 at 11:21 PM.
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Old Jul 29, 2009 | 12:30 AM
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Your LEDs draw less power than what your halogen bulbs used to, thus the computer thinks its burnt out and its flickering the bulb because its trying to 'detect' if there is the correct resistance. Solution = add resistors into the chain.
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Old Jul 29, 2009 | 12:43 AM
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Originally Posted by german-anger
Your LEDs draw less power than what your halogen bulbs used to, thus the computer thinks its burnt out and its flickering the bulb because its trying to 'detect' if there is the correct resistance. Solution = add resistors into the chain.
I agree. lol

Andy
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Old Jul 29, 2009 | 01:05 AM
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What kind of resistor and LED combo do you recommend?
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Old Jul 29, 2009 | 01:15 AM
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Originally Posted by MB_AMG
What kind of resistor and LED combo do you recommend?
This is what I had...what you see in there thats just only for one side (right) you have to do the other side too and no I dont have any problem or error so far and of course there is the other way to do too.



Andy
Attached Thumbnails License plate LED flickers....-img_0150.jpg  
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Old Jul 29, 2009 | 09:50 AM
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I have used these on my regular LED bulbs with good success:

http://cgi.ebay.com/LED-Bulb-Out-War...4.c0.m14.l1262
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Old Jul 29, 2009 | 08:19 PM
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https://mbworld.org/forums/c-class-w...onversion.html

5W100OHM resistors
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Old Jul 29, 2009 | 08:20 PM
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any kind of basic LEDs would do. you just need the correct resistor (5w100ohm) to draw the expected power in the circuit.
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