Two Wires were unplugged in my power mirror switch pushed back in where I thought and "bam" no more interior dash / auto headlamplights. One wire had two wires in it yellow white. The other was black.
Grand marquis 1997, I was fixing window track and pulled door panel off. two wires pulled from mirror switch yellow white combo and black pushed back into switch and nothing worked pulled out switched and bam heard pop no more dash lights. Head lights work only in manual not auto, turn signals work, brake lights work. just no dask or mirror.