I installed the 8000k kit from Vision last week, and have noticed that the bulbs occasionaly brighten for 2-3 seconds then return to the normal brightness. They do not turn off then back on, or flicker like others have had issues with. This will happen once every 5 mins or so. Any clue as to why it is doing this? I have checked my connections and my ground and I can't seem to locate anything that may be causing this. I am starting to think that the problem is in the relay, ballasts, or just as simple as a spike in power when my alternator kicks in to charge the battery. I am running the power supply straight from the battery with the relay harness. Has anyone else experienced anything like this? Any help is appreciated. Thanks.