Im having an issue with some 24 v LED headlights. the drivers side works fine on HIs and LOs but the other one wont turn on at all. I also swapped out the marker lights that had the ground on them. These just have a little metal ring on one of the screw holes and I'm not sure how that would be a good ground. Would a bad ground keep that headlight from working? Also, I should mention that neither side marker or blinker works either, Completely dead. Any input would be greatly appreciated.