DRL '' retrofit '' in the headlight with P21W

[M-A8]

Hi
This isn't a breaking news or something what wasn't done before I believe coz I can't be the first one with my average skills but I will share it anyway

I've just finished retrofitting Bi-xenon cornering AFS headlights (still wiring the AFS modules so not quiet completed yet) and first thing I couldn't stand were the halogen DRLs
Ugghhh, so ugly.

So, I've spent £41 on LEDs, plus some scotch locks, VCDS and I was ready to enjoy the awsome difference.

First of all I ordered some P21W CREE LEDs


and some 501 SMD LEDs (very important to get this exact construction 501s, will explain later)


The next obvious thing I did is I swapped the original 501s and P21Ws with the LEDs above.

[IMG][/IMG]

Then there is a little trick which enables DRLs at all the time (VCDS lets you switch them on and off via MMI) and dims them when you switch the main beam, basically they will work exactly as original headlights with LEDs just follow this steps.

Get the 2 scotch locks per headlight and connect sidelight's positive wire with DRL's positive, sidelight-red DRL-white, like that

[IMG][/IMG]

Then put everything back together (and I do not remover wheel arches or reservoir, only air box for this ''upgrade)

Then connect VCDS and go to Central Electronics [09], then to Coding [07] and change 3rd digit to 3 ---> Bi-xenon headlights with LED DRL.

Also you can select if you want DRLs to be included in MMI menu.

Click DO IT then close controller and you done

NO resistors
NO errors
NOTHING

And the effect:

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

[snapdragon]

I did this but just stuck a heavily tinned-ended wire into the gap on the back of each plug.

The first LED bulbs were pretty good, but started to burn out after 3 months
http://dx.com/s/100619

Next these which also flickered after 3 months.
2nd http://www.aliexpress.com/snapshot/224024448.html

These are even brighter, very OE look, but as soon as they are on, my DAB radio turns to bubble and squeak. They must emit some RF which is a big shame. The previous ones didn't despite looking similar. Glad I didm't start replacing radio parts, just found the damn radio started working fine when I turned ignition off and narrowed it down to the DRL.
3rd http://www.aliexpress.com/snapshot/248859848.html

Maybe I'll they these next?
http://www.aliexpress.com/item/Hot-S...255378976.html

[M-A8]

Hi

To be honest I do expect them to go wrong within next few months and if they do I will just ask for my money back as they come with 1 year warranty, right.

It's my first try so at the minute experimenting but the 501s are the top class, got them around year ago and they still running.

Also seems like CREE chips in car lighting are a fairly new thing, but if they go wrong next I will try P21ws from

http://www.hsun-lightings.com/

I've heard quiet few good things about this manufacturer.

We will see

[snapdragon]

Thanks for the link and 501 tips. Good luck! It's a great upgrade.

[M-A8]

My apologies, this thread is absolutely pointless, I've just realised that Snapdragon done it already some time ago and there is all already explained.
Sorry

[snapdragon]

Oh don't be like that I don't even know where mine is, and good to have an update. Keep us posted if your bulbs go or you change them.