Jammydodger

Hello all, I have a problem with my electric windows and a/c (heating fan), they all stopped at the same time one day. I replaced the swith for the windows, but still no go. I have checked the individual fuses under the driver dash, but all seem ok. One day, they all started working again, then that same day they all stopped working. I think it is some other fuse/relay problem, but do not know where to look. Please help...