Power seats, Locks, Trunk and fuel door all DIED

My 2001 Crown Victoria has been trouble free since I bought it and did a little work to it. About 3 months ago my Power seats, Locks, Trunk release and fuel door all died at the same time. I've checked all the fuses, wiring where it constantly bends from opening and closing the door and everything else I could think of and nothing. I assumed it would be a common enough problem but spent many hours searching online and haven't found the same problem or anyones solution that would fix it. My daughter just got her permit and I'de like to have her learn on this car and maybe give it to her as her first, the Problem is I was cleaning the car the when I first noticed this problem and I had the drivers seat way back in the Homey position, I can drive it uncomfortably but my daughters 5'3" Does anyone have any solutions or diagnostic tests a rookie could try?

I just had the same problem with my 2004 crown vic police car... its very frustrating because i cant find and answers. what have you found out?

I sold a laptop to a guy who owned a busy garage and he was sure I would find a bad fusible link near the starter, there was none I could find anywhere near there, he offered to fix it if I ran into any trouble & I'm assuming free or show me where it is but I've been out of the country and haven't gone bacxk yet. If he finds it or fixes it I'll let you know soon because I want to sell it soon..