I have an 1993 Lexus 400 with 156,000 miles on it. When I start my car, all of the lights on the dash light up. After driving for about five minutes, the lights start to flicker and then die completely. The entire dash is completely and totally dark and remains so for the rest of the trip. The next day when I start my car, the same process occurs again. The car drives fine. Thanks Elaine