MK7 or 7.5? If stock halogen I don't think that would be the harness setup you need. Looking to do a MK7 Halogen to Bi-xenon retrofit, but I decided on switching a few things as I went with Osram LED lights due to the price of lights. Euro R's were what I was going to do second, as you can pick a set of them up for about 1,100 USD new from E-acca. Not sure on the difference in MK7.5, but for a MK7 you want something like this:Stock Halogens to US Golf R Headlights.
Only difference with the R vs a GSW xenon headlight is the extra module for the dual LEDs.
If you want to spend more like I did, Carsystems and Kufatec I believe also make harnesses. Though in all honesty, I'd build it myself next time. Not a difficult harness to make and you can find a few guides on it with part numbers.