What would cause both headlights to go out at the same time (HD lights)? on 2006 Infiniti M35

What would cause both headlights to go out at the same time? (HD Lights)high beams work. Was told I need to have whole system replaced, which includes bulbs,ballast,etc

by in Birmingham, AL on January 27, 2011
1 answer
ANSWER by on April 04, 2011
its ur ballast but just buy the ballast and the start up wire because that loses power too...