Here’s all the information you will need if you want to do it:
Parts and approximate cost
$1000 – Oettinger front bumper
$375 – OEM S6 LEDs
$75? – B6 A4 tow hook, washer caps (x 2)
$65 – S6 LED Harness PN: 4F0 940 068 A
You will need misc relays, wires, and switches.
Expect to spend a LOT for custom fabrication, this is NOT a DIY job. I did not factor paint into the costs either.
The lights are wired to a Bosch relay. When you unlock the car, there’s a 12+ accessory. This remains live until the car is locked. The relay has power until the ignition is off, and the car is locked. Essentially, this allows me to have DRLs that turn on when the car is unlocked and remain on until I hit lock.
The power to the lights can be interrupted via a switch in the glove box.