I was thinking they would just plug in and this would be a ez change. The male plug doesn't fit the factory female plug. I had to cut the male plug from the new lights and rewire the plug from the old lights to make work. Was Ez for me to do just match the color wires to the same color. But in the end they work great. ThanksFit great with no modifications needed, easy-peasy & improved the look of the 2001 GTI V6 in an instant!Good looking and works wellI get alot of compliments on the way the look. However. I had to go in and fix the halo wiring to my euro switch. I ended up disconnecting fog lamps for dual halos. One would turn on in first mode but the left did not. Second switch. Pull out. Then the right side came on to match. Wasn't happy. But I made them worklook amazing and easy to install, there are some exposed wiring (not the actually wire) so it's kinda messy looking but they work great would probably need to do a wire tuck or reroute if you are desperate to make your engine bay clean and strippedEasy...Looks amazing and lights look great. Needs wire work if ur up for the challenge