Dgreen06TL

Whats up? Got an irritating problem with H.I.Ds. When im driving with my headlights on and hit a bump or shift down to second to turn my left headlight goes off. If i turn my lights off then back on one will stay off or sometimes both go off. They will kinda flicker before they go off when im driving. I was told maybe the bulbs are to high of a watts cause they are aftermarket and then i took it to an auto electric shop and they said both Ballast are bad and quoted me at $751. Im not paying that much. If anyone has a solution or could tell me a good aftermarket ballast i could replace it with that isnt as much that would be great.