2000 crown vic window and lighting problems.

Have a 2000 crown vic lx. I am having several electrical problems right now. I just replaced the blower motor and it works sometimes and other times it won't. Occasionally when it is not working while I am driving it will kick back on. Also my power windows, dome light, lighted mirror, and speakers are not working. The radio comes on I just don't get any sound. Any ideas?