I installed my HID conversion kit, and when i turn on my lights and radio i get alot of static?

ITS ONLY ON THE RADIO WHEN THE HIDS ARE ON, not the cds and when theyre off it works fine, i put a relay on them and it only got worse, and i know i wired it right. I think it might be EMP <elctromagnetic pulse> comming from the ballists. Is there something i could buy to put on the positive wire of my... show more ITS ONLY ON THE RADIO WHEN THE HIDS ARE ON, not the cds and when theyre off it works fine, i put a relay on them and it only got worse, and i know i wired it right. I think it might be EMP <elctromagnetic pulse> comming from the ballists. Is there something i could buy to put on the positive wire of my HEADUNIT....If not what should i do?
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