I am having a nagging problem with my HID lights. The driver stopped working due to the ballast going bad. I change the ballast. The HID lights works on the left side sometimes and on the right sometimes, both works sometimes and then sometimes none comes on. I have changed The HID bulbs( very expensive) I have changed the ballast. I have replaced the relays, had the light switch checked and I am still experiencing this problem. Anybody got any suggestions what next to do? 
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