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I bought an 04 Excursion 6.0L diesel a week ago. Was using it this weekend and had the headlights stop working three times, neither high or low beam working in either head light when this happens. First time I drove home on the fog lights and checked all the fuses for the lights, made sure they were tight and when I turned them on again they worked. Second time the headlights came on when I pulled it out for the fog lights. Third time I had to stop at a store on the way home and when I put it in park they magically came on. All other lights work and not other issues I can tell. I popped the switch and wiring is tight. I checked the headlight connections today when I got home from work and they are tight but lights are again not working. I figure it has to be something loose? Thoughts?
Possible though curious that all other lights work when just the headlights do not. And I am not even sure where to start looking for a loose ground in that sea of wiring. And when they come they don’t flicker and both hi and lo beam work. Maybe it is the switch though that wouldn't explain lights coming on when I put it in park.