Aldrich67

@maxandtara - Thanks for the wiring diagram. I have seen it before but I am not an electrical engineer but a stupid Ph.D. chemist so hard for me to decipher. I am looking at pages 15-17 and looking at those pages, it only has a T10(10 pin connector), I have a 14 pin connector and is that what that diagram is referring to? I think my 2004 A8L has a 10-pin headlight connector. So is there another A8L electrical diagram with a 14 pin connector?

I would like for someone with a 2007 A8L to confirm the wire colors before I tear the glovebox and etc. to see where exactly the passenger headlight wires go to inside the vehicle. I would assume that it's J519 but I have plugged in another module from a donor vehicle and still the same problem on the passenger side. I just don't know if the accident couple of year ago when they replaced the passenger side fenders, they had to somehow rewire the headlight harness and connector? Strange that everything on the front passenger side is out, fog light, headlight, turning signal on the fender/door.

Tannermink

Where did you find that? I am looking for one of those for the Suspension?

Aldrich67

Still trying to fix my front passenger side electrical issue. Below is the body control module underneath the dash near the fuse box, part# 4E0907279Q, can someone tell me which plug is responsible for the passenger side headlight, passenger side fog light, and the passenger side LED turning signal?

MP4.2+6.0

No real idea here on answer and really don' recall a post about it. The electrical schematics in the old Bentley CD manual get into wire and plug specific information for these kinds of components. Sort of a historical relic now--takes Windows XP to run and the old Bentley CD.

You could go on line and do a one day subscription to the Audi technical info and download anything or everything you want. I haven't done it personally (plus I use Mac OS), but if you have a Win PC and you search you can find out how to do it.

Aldrich67

Thank you MP4.2+6.0 for the suggestions but I don't think I can comprehend the wiring diagram as I have gotten a wiring diagram before.

So I went old school and check the driver side working light connector pins...I see that when the headlight is turned on the **** manually, there are pin #4 and pin#6 with 12v. When I checked the same pins on the passenger side, there is only 12v on pin#4 but not pin #6. With the car ignition off, I checked the continuity of the driver headlight pin#6 (yellow with black stripe) traced to the J519 BCM module, it was continuous and obviously with 12v at the BCM module.

However, checking passenger side pin#6 (solid yellow) traced to J519 BCM, there was continuity but no 12v at the BCM module. I haven't checked the continuity for the fog light or the side turning LED wires yet. I still suspect the J519 BCM but why two separate BCM modules(original and one form a used 2006 Audi A8L donor car) with the same part#(same software#) have the same electrical connection points on the passenger side not working(headlgiht, fog light, turning LED). I thought about purchasing either a new from stealership or used working BCM from eBay but still baffled about the identical electrical outage points described with both BCM modules.

Any other help/suggestions from AW members?