Have had crazy issues with headlights. So both were flickering for a while. Finally i broke down and bought two new bulbs. Replaced them both which was an adventure considering the previous owner broke the heads off the release. Both bulbs back in and working fine for a day then out of the bleu i start the treg and the warning light came on. I got out and checked lights and sure enough the drivers side was out. Tried restarting treg and turning lights on and off. No luck. Tried a new bulb yet still wont turn on. I have no leveling or flapper nor bi xenon on drivers side. Checked wiring all looks good. Swapped ballasts thats where im confused. Pass side ballast still will not operate drivers side assembly and drivers ballast wont operate pass side assembly. Should the good ballast not make the drivers side work drivers side still has signal and marker lamp and high beam still work. Looking for some advice or a diagram of which pins are what on the vehicle side where the assembly plugs to.