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Thread: L.E.Ds

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    Dazmo's Avatar
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    L.E.Ds

    I know this is a much talked about subject but i thought i would ask anyway!

    Does anyone know where i can buy a set of number plate L.E.Ds with built in resistors?

    I bought some error free canbus ones and they look great but unfortuantly the damn things keep giving me bulb errors and i cant be arsed with wiring up resistors and taking half my boot apart

    Somebody must make them with built in resistors!


    Maritus Blue Audi A4 3.0 V6 S-Line TDi 275bhp, 585nm Torque

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  3. #2
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    I have tried 3 different types of LED bulbs including these: LED Number License Plate Lamp Light-Audi A3 A4 A6 A8 Q7 on eBay (end time 26-Jan-11 15:16:14 GMT) which claim to have resistors built in, but they still give an error (look great though).
    I have also tried LED festoon bulbs with a 150 ohm resistor soldered in, but these sometimes give an error and sometimes don't.

    To 'trick' the CAN-bus I think you need to get a resistance reading for a 'normal' filament bulb and then use a resistor which makes up the difference between this figure and an LED one. You don't have to take the boot apart - you can solder the resistor in parallel to the bulb within the holder.

    I am not convinced that anyone makes a non-error LED.

    Hope this helps!

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    how can you find out the resistence of a normal bulb and the l.e.d bulb just thinking that way the resistence needed to be made up by the risitor could be figered out??

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    Getting a resistor that fixes the issue isn't the problem but the heat is. I bought a number of resistors from Maplins to test and although they worked, they were far too hot to touch (I wrapped the resistor around the metal prongs).

    The only ones that, as far as I am aware, do not give errors are the ones sold by Dectane....but they are very expensive for what they are.

    https://www.dectane.de/product_info....79d09483106f40
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

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    Quote Originally Posted by jay01704 View Post
    how can you find out the resistence of a normal bulb and the l.e.d bulb just thinking that way the resistence needed to be made up by the risitor could be figered out??
    Try this. Ohm's law calculation calculator calculate ohms formulas - voltage current resistance formula - magic triangle equation tip online voltage volts resitor resistance amps amperes audio engineering E V I R calc conductivity resistivity - sengpielaudio S
    I'm having a play to try cancel the BOW on my B5 after fitting LEDs to the 3rd brake light.

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    The Dectane ones look identical to the ones sitting on my kitchen table, bought from eBay as above.
    Someone told me that the resistances needed can vary from car to car as well because the CAN-bus is set to 'OK' after it has been built and checked, rather than given a default setting. Not sure if this is correct though.
    I thought about ordering the Dectane ones but it's a lot of money and hassle if they don't work!

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    Wrath's Avatar
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    The only thing I can say is that I haven't read any posts from people saying the Dectane ones fail.

    When I tried it with various bulbs off ebay, I could fit one with no error, only when putting the second one in did I get the error. I tried 2 120ohm resistors and they knocked the error on the head but burnt my fingers when removing them.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

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    What was the power rating of the resistors you were using?

    It's likely that they weren't rated high enough to dissipate the power demanded of them, higher wattage resistors would work, however they are much more bulky and you'll have a hard time finding space for them. It would be a worthwhile experiment to find the highest value of resistor you can fit without the error coming up, as this would reduce the level of power and thereby heat to be dissipated, you would then be able to determine a resistor network to give you good power dissipation for the right resistance.

    Four Sprung Ducks

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    Dazmo's Avatar
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    Well i think im going to risk a set of these if they do genuinly work!

    My only concern is that with so many L.E.Ds i dont want the back of the car looking like a flood light!


    Maritus Blue Audi A4 3.0 V6 S-Line TDi 275bhp, 585nm Torque

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    hmm yes the floodlght effect hopefully wont blind people if so though

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    I used 2W resistors and got several of different ratings, they all were scarily hot after a few minutes.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

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    I found a link to a guy who had the same issues with the resistors over heating.
    He made a heat sink and added a fan to help keep it cool.
    He said it worked really well and mounted it in his boot.

    I'm having issues finding the link now.

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    Wrath's Avatar
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    the way other people have done it is to put the resistors in the boot but I couldn't be faffed removing the boot liner etc.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

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    2W should be enough to dissipate the power the resistors will be pulling, 12V across a 120 ohm resistor would give you a power draw of 1.2W, easily within the capabilities of the resistors, did you say you were putting them in parallel with the bulbs? If so that could be your problem, resistances in parallel will effectively mean the car will see a lower resistance value, enabaling more current to flow, where as if they were in series, the resistances would stack, reducing current and also heat, might be worth a try if you can somehow fit them in series, although I still think that two resistors of double the resistance in parallel would give you the lowest heat possible for a minimum of additional fuss, as the current through each would be halved, and so too would the power dissipated by them.

    Four Sprung Ducks

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    AUDI LED NUMBER PLATE LIGHT RS4 AVANT QUATTRO (06-08) on eBay (end time 13-Jan-11 13:41:29 GMT) these look like the job to solve al issues not to pricey eiter

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    Quote Originally Posted by jay01704 View Post
    Nice find mate, will buy some and give them a go!


    Maritus Blue Audi A4 3.0 V6 S-Line TDi 275bhp, 585nm Torque

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    Wrath's Avatar
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    I'm pretty sure both of these will give errors on some cars.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

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    Wrath's Avatar
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    Quote Originally Posted by jay01704 View Post
    I bought a similar set from the same seller and they gave me errors.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

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    damb will we ever have led with no errors audi = mod haters
    i reckon its cos they dont want us to do extras for the fraction of the cost theyed charge if cars bought that way c#%$s

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    jon-easy's Avatar
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    Yeah - they look identical to the ones I bought and they gave me an error...

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    Dazmo's Avatar
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    Yep i have errors form those 30 ebay ones too, will be getting my money back!


    Maritus Blue Audi A4 3.0 V6 S-Line TDi 275bhp, 585nm Torque

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    hmm is it ever gunna happen when will we get led this is just not fair lol

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    The way we get around this in the truck industry is to wire in a normal bulb and hide it away from site so that the wattage drawn from the bulb is seen and the ECU shows no fault, the LEDs are then fitted into the normal bulb holder.

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    LandSpeed's Avatar
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    these are the ones that i have got, so far ive had no error's (i really hope i dont regret saying that)

    2x WHITE 36mm SMD LED Festoon Bulb Light BMW No ERROR K on eBay (end time 15-Jan-11 14:38:42 GMT)
    1.8t Multitronic 2002

    RNS-E - Xenons - Full Leather - Cruise - DIS - Interior Light Pack - Ambient Lighting - RS4 ARB - 19" Hartman MTM Reps

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  27. #26
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    Quote Originally Posted by LandSpeed View Post
    these are the ones that i have got, so far ive had no error's (i really hope i dont regret saying that)

    2x WHITE 36mm SMD LED Festoon Bulb Light BMW No ERROR K on eBay (end time 15-Jan-11 14:38:42 GMT)
    Do you have a B7 OR B6?


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    Wrath's Avatar
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    Quote Originally Posted by LandSpeed View Post
    these are the ones that i have got, so far ive had no error's (i really hope i dont regret saying that)

    2x WHITE 36mm SMD LED Festoon Bulb Light BMW No ERROR K on eBay (end time 15-Jan-11 14:38:42 GMT)
    Just be aware that in some B7's, LEDs such as this seem to be okay but then placed in other B7s and errors show up. These above look exactly like the ones I fitted.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

  29. #28
    LandSpeed's Avatar
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    Quote Originally Posted by Dazmo View Post
    Do you have a B7 OR B6?
    B6
    1.8t Multitronic 2002

    RNS-E - Xenons - Full Leather - Cruise - DIS - Interior Light Pack - Ambient Lighting - RS4 ARB - 19" Hartman MTM Reps

    Ready to be installed: S Line front spoiler - S4 Rear Bumper - Eibach Sportline Springs

  30. #29
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    Quote Originally Posted by LandSpeed View Post
    B6
    Thats why they work for you then!


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  31. #30
    Warmonger

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    27quid ebay ones just arrived will fit tonight and see if i am lucky...
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    Phantom Black - Black RS4 Wheels - Black Leather
    RNSE MMI, B/tooth phone, Bose, RS4 pedals, Bi-Xenon, LED number plate lights..

    Wants - electric folding mirrors, ambient lighting, puddle lights, rain sensor, auto lights, auto dim rear-view..

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    i have tried literally all the market has to offer in my guide to the LEDS in the indicators and number plate lights.
    resistors work for the front and side indicators but not for the number plate lights.
    the only ones that work were the Decane ones, 30, nice and neat, trust me its a lot of faffing about


    my car with them fitted
    NOW FOR SALE
    Audi A4 Avant S-LINE 2.0 TDI
    BOSE - PARKING SENSORS front and rear - ANGEL REMAP to 183bhp
    LED NUMBER PLATE LIGHTS, HIDS, LED SIDE INDICATORS, LED SIDELIGHTS,19x9 BENTLEY'S, S4 345 MTEC Drilled/grooved Disks -35 on H&R SPRINGS, RS4 REAR ARB RS4 Grille FULL VCDS LED RNS-E DECTANE LED REAR LIGHTS

    TO DO:
    NOTHING - Am i finished really ??

  33. #32
    Dazmo's Avatar
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    Quote Originally Posted by doug.p View Post
    i have tried literally all the market has to offer in my guide to the LEDS in the indicators and number plate lights.
    resistors work for the front and side indicators but not for the number plate lights.
    the only ones that work were the Decane ones, 30, nice and neat, trust me its a lot of faffing about


    my car with them fitted
    So are you saying the decane number plate leds work with the b7?


    Maritus Blue Audi A4 3.0 V6 S-Line TDi 275bhp, 585nm Torque

  34. #33
    doug.p's Avatar
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    yes indeed in my B7 the only thing that worked were the dectane ones here:

    https://www.dectane.de/product_info....-a8--uva-.html


    they are ok for B6 & B7
    my findings are that the B7 is much fussier with what you can get away with than the B6.
    the other option is to use normal LED's and have VAG turn the warning light off, but with the resistors needed it gets messy, the dectane ones are a whole unit and very neat, but you pay for it
    NOW FOR SALE
    Audi A4 Avant S-LINE 2.0 TDI
    BOSE - PARKING SENSORS front and rear - ANGEL REMAP to 183bhp
    LED NUMBER PLATE LIGHTS, HIDS, LED SIDE INDICATORS, LED SIDELIGHTS,19x9 BENTLEY'S, S4 345 MTEC Drilled/grooved Disks -35 on H&R SPRINGS, RS4 REAR ARB RS4 Grille FULL VCDS LED RNS-E DECTANE LED REAR LIGHTS

    TO DO:
    NOTHING - Am i finished really ??

  35. #34
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    Hi all

    New here, I've been reading what you all have to say. I've got an Audi A4 B7 s-line on a 57 plate. First I bought these LED bulbs for the number plate
    Audi LED Number Plate Bulb Canbus No Error Warning on eBay (end time 06-Feb-11 09:54:07 GMT)
    but they made the warning light come on
    then these which i paid over 30 for
    Audi A3 A4 (B6 B7) License Number Plate LED Light Bulbs on eBay (end time 03-Mar-11 21:56:45 GMT)
    and these also made the warning light come on, so not to happy after spending over 40 on LEDs.

    I want to try the dectane ones but i dont really want to shell out even more. Is there any more conformation that these work on the B7's???????

    Thanks Rob

  36. #35
    Warmonger

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    The ebay ones didnt work for me so sent em back
    Dectanes are on way to me....really expensive..49.75 just charged to my bank after Euro conversion...
    Doug. P - Not sure where you got 30 quid from..

    anyway..looking fwd to fitting them
    -----------------------------------------------------
    2009 A4 Cab B7 2.0 TFSI S-Line Special 'Final' Edition
    Phantom Black - Black RS4 Wheels - Black Leather
    RNSE MMI, B/tooth phone, Bose, RS4 pedals, Bi-Xenon, LED number plate lights..

    Wants - electric folding mirrors, ambient lighting, puddle lights, rain sensor, auto lights, auto dim rear-view..

  37. #36
    jon-easy's Avatar
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    Hi i_M I would be interested to know whether they give you an error or not... cheers
    Jonny

  38. #37
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    i purchased mine about a year ago - so maybe the exchange rate had something to do with it ?
    but inc P&P they were 38 - just checked my statement
    NOW FOR SALE
    Audi A4 Avant S-LINE 2.0 TDI
    BOSE - PARKING SENSORS front and rear - ANGEL REMAP to 183bhp
    LED NUMBER PLATE LIGHTS, HIDS, LED SIDE INDICATORS, LED SIDELIGHTS,19x9 BENTLEY'S, S4 345 MTEC Drilled/grooved Disks -35 on H&R SPRINGS, RS4 REAR ARB RS4 Grille FULL VCDS LED RNS-E DECTANE LED REAR LIGHTS

    TO DO:
    NOTHING - Am i finished really ??

  39. #38
    doug.p's Avatar
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    and no - definatly 100% no errors on mine with them
    NOW FOR SALE
    Audi A4 Avant S-LINE 2.0 TDI
    BOSE - PARKING SENSORS front and rear - ANGEL REMAP to 183bhp
    LED NUMBER PLATE LIGHTS, HIDS, LED SIDE INDICATORS, LED SIDELIGHTS,19x9 BENTLEY'S, S4 345 MTEC Drilled/grooved Disks -35 on H&R SPRINGS, RS4 REAR ARB RS4 Grille FULL VCDS LED RNS-E DECTANE LED REAR LIGHTS

    TO DO:
    NOTHING - Am i finished really ??

  40. #39
    Warmonger

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    damn GBP ! hehe

    Decatane list them as inclusive of tax...then add tax at checkout and a chunky shipping charge...
    -----------------------------------------------------
    2009 A4 Cab B7 2.0 TFSI S-Line Special 'Final' Edition
    Phantom Black - Black RS4 Wheels - Black Leather
    RNSE MMI, B/tooth phone, Bose, RS4 pedals, Bi-Xenon, LED number plate lights..

    Wants - electric folding mirrors, ambient lighting, puddle lights, rain sensor, auto lights, auto dim rear-view..

  41. #40
    06 A4 2.0T FSi S-Line SE

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    Phantom Black Audi A4 2.0T FSi Quattro S-Line Special Edition
    RS4 grill | S4 mirrors | Tints: 45% sides, 35% rear screen | EasyStreet AutoPilot + AirLift struts/bags | Touareg ET60 9x19" on 215/35/19 all round | 25mm front, 35mm PCD adapters | EBC Red Stuff pads | Red calipers | RS4 pedals | Late-spec clear corner OEM bi-xenons | Leon Cupra R splitter | RNS-E | Ambient lighting | R8 oil cap | Carbonio & more

 

 
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