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OE led taillight conversion

Discussion in 'Audi S4/A4/A4 Cab (B8 Chassis)' started by trance, Nov 25, 2013.

  1. trance
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    trance New Member

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    [Nov 25, 2013]
    Hi guys.

    I managed to get hold of used original led tailights.

    I am having some difficulty sourcing the wiring adapter harness that will allow me to fit these.
    Has anyone thats already done this conversion got details of suppliers?


    Cheers
    #1
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  3. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    I made my own. What car have you got? I may be able to help you make your own if you're good with a bit of diy. There are various options regarding how much you might end up spending (if you get Audi connectors and terminals etc.) but you could do it for as little as £10-£15
    #2
  4. hollow
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    hollow Active Member

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    [Nov 26, 2013]
    wiring kit on ebay if your not upto diy .
    #3
  5. trance
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    trance New Member

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    [Nov 26, 2013]
    Def up for the diy, save me a fortune :yes:. You got a link?

    Do you need the module as well?
    #4
  6. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    What you need depends on a few things. What lights are on the car as standard? Bulbs or LED? and are the new lights LED or Facelift LED? The lights will also need some coding. Do you have Vagcom/VCDS?
    #5
  7. trance
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    trance New Member

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    [Nov 26, 2013]
    Hi mate,

    I am changing from bulb to LED, the new lights are from a 2012 model, mine is a 2008 model. I don't have a VCDS but my local audi specialist can code. I have been told by a member on here that I need instructions with the adapters to code and without the instructions with the cables it cannot be done?
    #6
  8. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Well I went to Audi and they hadn't a clue and they could only code their own upgrade package. Basically they plug your car in and run a piece of software. They don't use VCDS.
    Saying that, your local dealer may have someone who can do it with a VCDS they have themselves but it's unlikely that Audi would support the work being done.
    Give me a few minutes and I'll root out the coding and wiring changes.
    #7
  9. trance
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    trance New Member

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    [Nov 26, 2013]
    Spot on mate, appreciate that
    #8
  10. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Before I post these I better just say that I haven't tried this so I can't accept responsibility if it goes wrong. I have done the LED to FL LED conversion on my car and used the coding from the same source and it was spot on so I have no reason to doubt it's accuracy. The below channel adaptations are for Halogen to LED (pre facelift only)
    #9
  11. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Double Checking coding - BRB
    Last edited: Nov 27, 2013
    #10
  12. trance
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    trance New Member

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    [Nov 26, 2013]
    Great info cheers.

    How do I go about making the adapter harness?

    Cheers
    #11
  13. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Coding is done from within 46-Central Conv. - Adaptation; but you'll need to enter the security access code first. The code is 16017
    #12
  14. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    I'm just having an issue with formatting the details. I'll pop up the wiring in a few minutes.
    #13
  15. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Double checking coding - will be right back
    Last edited: Nov 27, 2013
    #14
  16. RS5UK
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    [Nov 26, 2013]
    As regards the actual parts to use, if you want to keep the cost to a minimum, you can use ATX power connectors available from Maplin. The female connectors fit snug over the pins in the light and the male pins are a good fit in the the plug which goes into the light. Just make sure you insulate all of the outside of the female connectors with insulating tape or heatshrink and the unexposed areas of the male ones in the same way. They're a really good fit and plenty capable of carrying the power in the wires.

    Or you could get the parts listed on the pdf. The prices have changed since it was put together. Mine cost around £140 for plugs and wires with connectors from Audi but even they thought the price was a bit steep which prompted my visit to Maplin. The maplin connectors cost about £3 for a set of 20 Male and £3 for a set of 20 female connecting pins.

    If you're anywhere near Bolton I could give you a hand with the wiring and can do the coding for you over the weekend.
    #15
  17. RS5UK
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    RS5UK Member

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  18. trance
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    trance New Member

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    [Nov 26, 2013]
    Right I have downloaded your link. I am understanding some of it, coding, inner + outer r/l Lamps. Just not sure on connectors and type of cable required?. Can I get this stuff on eBay? I had a search but not entirely sure what to look for.
    #17
  19. trance
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    trance New Member

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    [Nov 26, 2013]
    Ah o.k you beat me to it!
    #18
  20. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Cable is 0.5mm squared. Again, you can get this from Maplin. If it's a bit thicker thats ok but I wouldn't go much thicker
    #19
  21. trance
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    trance New Member

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    [Nov 26, 2013]
    Thanks for the offer on the coding, just a bit far out for that I think. I am across the border, near Stirling.

    The maplin way sounds like it works well, just a bit heath Robinson!
    Far prefer the idea of the proper connectors, altough still sounds expensive for what is basically a few connectors and small bits of cable!

    For that kind of money I have been offered them with instructions. Shame, was looking forward to a bit of diy!
    #20
  22. RS5UK
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    [Nov 26, 2013]
    The plugs are about £21 from Audi. It's the wires with connectors on that are expensive and they don't supply the pins without the wires. I've done mine using heatshrink and insulating tape with the Maplin connectors and theres no damage to anything until I decide to splash out on the Audi wires. It worked a treat and everything is watertight, sealed and neat.
    #21
  23. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    Just so you're aware, in the wiring part of the PDF you'll see X1 and X2. This means you'll need to have one wire on each side connecting the 2 lights on that side together (Pin 7 on the outer light to Pin 1 on the inner light). It should be easy to route so that it's not seen. Whether you buy harnesses or make your own you'll need this wire for full functionality
    #22
  24. hollow
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    hollow Active Member

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    [Nov 26, 2013]

    you forgot login code for module
    #23
    A6tyy likes this.
  25. RS5UK
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    RS5UK Member

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    [Nov 26, 2013]
    It's in Post 12
    #24
  26. hollow
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    hollow Active Member

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    [Nov 27, 2013]
    im blind lol ,forgot to mention i never had to add a wire to the car for full functionality ,sure all can be done with coding now ,il find coding out tomorrow see if there's any differences in the coding you posted.
    #25
  27. RS5UK
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    [Nov 27, 2013]
    If its pre FL LED to FL LED you don't need to add the wire. Was yours originally Halogen or LED?
    #26
  28. hollow
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    hollow Active Member

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    [Nov 27, 2013]
    halogen to pre fl led ,by adding the wire what does it achieve ? inner brake lights ?
    #27
  29. RS5UK
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    RS5UK Member

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    [Nov 27, 2013]
    Just double checking my info. I'll get back to confirm asap
    #28
  30. RS5UK
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    RS5UK Member

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    [Nov 27, 2013]
    Trance, exactly which model do you have? There are some differences between different versions.
    #29
  31. trance
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    trance New Member

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    [Nov 27, 2013]
    A4 B8 3.0 ltr tdi s line on a '08' plate
    #30
  32. hollow
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    hollow Active Member

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    [Nov 30, 2013]
    this is my coding which didnt need the extra wire for the led lights to function correctly

    channels
    181 65535 > 64608
    187 16383 > 16368
    188 16383 > 16368
    195 10753 > 5123 inner brake light with fog
    196 10785 > 5155 inner brake light with fog
    197 11268 > 5124
    198 11300 > 5156
    203 7754 > 7753

    there is 1 channel missing 204 ive missplaced it over the last few days was jotted down in a note pad ,im sure il find it but my head is up my ass atm with these meds
    #31
  33. trance
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    trance New Member

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    [Nov 30, 2013]
    Nice one hollow, cheers. I am hoping the coding instructions come with the adapters. Managed to source a set, works out cheaper than the proper Audi connectors, a bit of a wait to get them though!
    #32
  34. A6tyy
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    A6tyy New Member

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    [Dec 30, 2013]
    just a question, i got a 2009 a4 and have a bcm from a 2013 car which i had the FL led lights, will it still need coding? i know i will have to change a few other things as my car might have extras or lack of them.
    thank you for any help in advance
    #33
  35. ScottishS3
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    ScottishS3 Well-Known Member

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    [Dec 30, 2013]
    Whats the difference between the LED rear lights and Facelift LED Rear Lights?
    Are the face lift ones from the newer 2012/13 facelift model? Sorry if that sounds abit daft but just wanted to confirm.

    I too, want to carry out this converstion so I'm reading this thread with great interest. I just need to find a good set of LED rear lights on eBay now!
    I'm amazed that it's always (genuine that is) Avant LED rear lights that are for sale on eBay. I don't know what that says about Avant drivers?:think:...Are they crashing all the time or what?
    Last edited: Dec 30, 2013
    #34
  36. A6tyy
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    [Dec 30, 2013]
    #35
  37. A6tyy
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  38. A6tyy
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  39. A6tyy
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    A6tyy New Member

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    [Dec 30, 2013]
    and mine at the moment look nothing like either of them lol. I have the se standard bulb ones.
    if you have a saloon then you need a new bootlid the shape of the inner lights slightly different. also I picked up a bumper because its slightly different too but you can use your old one if you wish.
    Seen a few sites where everyone saying its not worth doing the conversion on the back and front as its too expensive, but honestly I just been getting the bits off ebay slowly so far
    £200 (best offer made) was up for £275 - Face lift rear led lights
    £120 (best offer made) think one item was up for £70 and the other £80 - boot lid and rear bumper off a 2013 se
    £60 (best offer made) was up for £79 - bcm from the same car as the led lights so coding shud be set up already im hoping
    and paints cost me £250 for the back end (guys gotta flick it in as they were painted off the car)

    but basically if you keep looking you will find the bits cheap enough, only thing I am stuggling with are the front lights used complete they going for around £800 but going to keep looking.
    #38
  40. ScottishS3
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    ScottishS3 Well-Known Member

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    [Dec 30, 2013]
    Sounds like an expensive job then!

    Does anybody know what the aftermarket LED lights are like?
    #39
  41. trance
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    trance New Member

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    [Dec 30, 2013]
    Bit of messing about for the FL rear light's as mentioned.

    The aftermarket rear LED lights only have a brake light on the outer light, you don't need these coded either. My concern with them was the quality. I had read various people were having problems with some of the aftermarket lights.
    #40

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