Angel Eyes Wiring Question

[lebahawk]

Hello guys, I have a quick question for the people that have done this mod on the 2001 -2003 E53 I am trying to install the Angel Eyes kit that I bought off ebay, I opened the kit and it only has the wiring harness that goes out to the ballester and nothing else, I tried to compare it to the DIY posted on this website and it seems like there is another Harness that I need to buy.
Now the question is do I really need this Harness ? if I want to make the eyes light up with the low beam. If so where do you guys suggest that I buy it from ? Thanks in advance.