Hey guys i am running into this problem over and over.

My passenger side headlight kept going out after a 20-30 min so i replaced both bulbs. It still went out. Then i replaced the ballast on that side. It still went off. It usually randomly went off after 20 min. I swapped the bulb from passenger to driver and it works fine on the driver side. and the bulb from the driver side now in passenger goes off after 5 minutes now. Can't figure this one out.

Any help would be great.