Herman,

Are the halogen and Xenon headlamp HARNESSES for the 2000 Audi A6 the same? My HID headlamp assemblies will be arriving next week and I am wondering if I will be able just to plug them into the existing stock harness.

Thank you

What I do know is that one guy in MA

(owner of this picture)

he verified with a Audi technician both in real life and on diagram that headlight curcuit is identical on A6's coming with halogen and HID. Which is good news: u do not need relay! I dont know if plug is the same. It should be relatively easy to compare once u get the HID headlights!

Thanks for your reply, Herman! I will keep you all posted on the similarities/differences that I note when completing the assembly swap.

Herman, Do you know if that is true for 2002 A4 also?

no, sorry.