I purchased a retrofit harness for the 09 f150 and for the first week or so they worked perfectly. Recently they started acting up. The lights would turn off and stay off. I double checked the fuse and all the connections and they are fine. Ballasts and bulbs are fine as well. In both instances I had they were off for a moment and next thing you know I hit a bump and they turn on. Today they were on earlier and when I turn them on and they stayed off. Should I return the harness or double check a certain point? Any ideas are welcome! Hoping to clear this up quickly! Thanks guys!