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Message: <blockquote data-quote="95PGTTech" data-source="post: 366079" data-attributes="member: 9525">The grounds DO cause interference. I came up with attempting that solution after other people with similar issues reported that by cleaning the grounds and no other changes, they solved their issues.There are no wiring modifications to the car other than the HIDs. The electric water pump was installed months after, is on a completely separate circuit, and has worked flawlessly since the first fire-up. There are absolutely zero other wiring modifications other than the 9005/9006 headlight wiring harness, which also worked flawlessly from day one of install until I installed the HIDs and they still work perfectly on the high beam which is unchanged.I attempted to use a piece of sandpaper to sand down my grounds to bare metal and tried it that way. When that did not work, I used alligator clip jumper wires as an attempt to diagnose the issue, I did not drive the car like that. As I understand it there is absolutely no better ground than the negative side of the battery.I did go back to the factory setup once which is very simple actually, one side is not even used, plug a bulb in, disconnect the other side from the 9005/9006 harness and put a bulb in it. It works perfectly on high and low beam.Another issue I am having with these is that the passenger side headlight randomly goes out. When I turn on the headlights I have to check both are on every time because about 20% of the time the passenger side will not come on. So I have to get out, remove the 5A fuse from the circuit, and insert it back in and it comes back on. Up until a few weeks ago I thought once I did this the system was good while driving, but driving in front of the car I saw it randomly go out while driving. If it was an open in the circuit or a short, it should pop the fuse? no? I just remove it, put it back in, and it's fine. I tried using a multimeter to ohm out the wiring and found nothing, but I sort of expected that with an intermittent problem like so. Keep in mind this is isolated to the passenger side and the two sides are completely separate as far as the wiring goes. The wires travel from the 9006 connector to the ballast, then to the new HID bulb and to a ground. I have tried leaving on just the HID on the passenger side and it still does this issue, and vice versa. Also, the passenger side will flicker once about every 20 minutes just one flicker off/on. I just thought both to be traits of low-quality systems, but it is isolated to the passenger side. If I run the car driver side HID passenger side halogen bulb in the 9006 harness, I get neither of those symptoms but still radio interference.However, if I only run one, radio interference is still bad, real bad, but not as complete static as with both. If I amplify the antenna with even just a wire and hold it higher, it gets better, but still static, which all lead me to believe they are just cheap chinese ballasts which are not shielded properly. I did experiment with moving them around the engine bay and it does seem to get better in certain places, but only on specific channels. Moving away from the antenna for example gets better on certain channels but worse on others. The wires being shielded I have not looked into but there is only a very short (like 1/2") section that is not shielded right near the ground o-ring. The rest of the wiring I actually have inside 3/8" black plastic conduit and electrical tape on top of the shielding on the wire.I would really like to find a nice chunk of lead to put in between one and the antenna, that would really let me know it was a cheap ballast not properly shielded issue. I promise to try the high-quality McCulloch kit I have this week one part at a time to try and isolate the component. BTW...I have recently installed a brand new alternator, HIDs draw less current than halogen bulbs, and if they were drawing too many amps at idle I could see, but why would it be a problem even when I'm winding out the motor at 6000+ rpm?I don't mean to sound ungrateful for the help guys, but I seriously have exhausted every option I or anyone else could have thought of for the last six months. If anyone comes up with anything I haven't tried yet I promise to give it a shot. I really wish I would have kept that StangMods kit I bought originally...9004 Dual...but I purchased the projectors right after buying them which came with the 9005/9006 harness.</blockquote>