Ford F150 electrical gremlins? recent failures of electrical accessories.?

I have a 2000 ford f150 Lariat 4x4 and recently funny things have been happening. one component or other fails for a while then comes back. It is as if the electric power to the component is gone and then maybe 5 minutes later it comes back. What is so unusual is there are several accessories that are affected at different times. The affected Accessoriess are the radio, power windows, windshield wipers, interior lights, odometer display, right side power door lock, and today the truck will not come out of park with the brake pedal depressed and the engine running. The check engine light has not been on (therefore no OBD codes) but the ABS anti lock brake) light has been on the dash for the last 2 weeks. Any insight into this? I am totally perplexed and know enough to fix the problem if I only knew where to start. I would appreciate someone's expertise.