I received my HD 4 Hi harness on Friday (3/11). Installed it on Saturday. All I can say is the quality of materials and workmanship is excellent. It took about 2 hours to install, I like everything hidden. At the same time I installed GE NightHawk bulbs. Everything works like it is supposed to. I would highly recommend both the harness and the bulbs. Very well pleased. Thanx, gmachinz