I have a 2000 Ford Explorer XLT that has a signal light and hazard light problem. They work while in park. They do not work in drive. It started out as the left signal only doing this and then it eventually started on the right and hazard. All bulbs are good because when parked they all work. Is there more than one relay switch for these lights? One for in park and one for drive? Any help would really be appreciated. Thanks!!