I installed my new HIDS last night and they work fine when the engine is off, but as soon as i start the engine they flicker and shut off after two minutes of running. I have about 6 ballasts and i tried them all. They all do the same thing. It does it on both sides as well. i tried it with a 55w and 35w set up. The bulbs and ballasts are fine. Do i need a capacitor or relay?