So i have ZKW headlights on my car. They were working fine until a week ago and i noticed the passenger one is out. Few minutes of driving it came on and stayed on for the whole trip. Same thing was happening everyday and last night, this time passenger one came on right away and the drivers side came on few minutes later. Its been doing that back and forth. Today they both wouldnt work but drivers side comes on after couple times of turning off and on the switch. New Bulbs were put in less than a month ago. Could it be the ballasts or ignitors? Switch itself maybe? Is there something wrong with the whole system? I heard bad ground to rr taillamp could cause this? Any help would be super. My ZKWs bowls are shot anyways and at this point, i am wishing for just simple halogens haha! Thanks so much.