I just did the retrofit source hid kit on my 2015 yukon. i used the hd kit for 2014 sierra with capacitor link and it works great. When i installed it i just extended the battery cables with some 8 guage wire i had laying around and flip flopped the system layout so that all the connections and bulk of the wiring/capacitor is on the drivers side where theres more room to work. Trying to fit the capacitor and relay in the area of the air box looked like a nightmare to me. So far no problems to report, no flickering as others have mentioned. I did modify some of the connectors to fit properly. Some connectors can actually be upside down and still appear attatched but will actually be quite loose. I can see someone not noticing that and creating a mess of problems. My only complaint is I did the 35w 5500k combo. Im not happy with the color match to the DRL led so i ordered 4500k bulbs to try out and see if they match up a little better.