Hey Big-L, I was at the dealership today for the same problem you described. Sometimes if I turn it below 5, all the lights go out, dash, headlights, defrost goes screwey. Of course they found nothing wrong with the car and said bring it in when its doing it ...like thats going to happen.
Of course they had to repeatedly tell me how in 20 years they have never heard of this happening and how HE owns a 99 and never had this problem. well gee, I guess if youve never heard of it and your car doesnt do it, then Im just making it all up *rolling eyes*
thanks for the post, Ill pass it on to my husband!