On march 3rd, 2016 i started driving from pa to nd on i-90/94 during the day with the headlights on. there was light snow and drizzle and somewhere along the route the exterior lights failed and would not come back on. as i continued on my trip and about 3 to 4 hours later after driving in dry weather the lights started working again. the same thing happened the following day as i continued between chicago and nd. once again it was wet weather and again the exterior lights failed and would not come on for several hours after driving in dry weather again. fortunately i was driving in daylight hours instead of night time but if it had been during the night and the lights failed it probably would have caused a serious accident.