For the Power Windows, I can definitely say it is the harness from the body to the door that is acting up. remove your door trim, pull back the rubber cover in between the door and frame, disconnect the harness and bring it back through the door.
You will see the wires have gotten brittle and have severed in one or more area. Splice and repair with crimps, and put back the rubber cover, reconnect and voilà! I personally add some length of new wire, and if you are comfortable enough and the plug state permits you can even restore the plug directly on the new wires preventing from having to push crimps into the rubber cover.
What happens is with time, heat/cold cycles, door open/close movements the wires get bent back and forth and end up braking. The crimps provide a simpler and better mechanical repair than soldering. Adding a length of wire makes it so that it is new wiring being submitted with the Door open/close stress, making it for a longer lasting repair.
As for you Wipers, I would open up the Steering Column housing and look for wires that have been exposed by friction from steering shaft turning or even cracked up wires showing similar fatigue to the ones in the door.
As for the Cruise control, the Wiper suggestion also applies, but additionally, it could be the clock spring wires behind the air bags, or any wiring harness feeding the Cruise Control system located under the battery tray (under the hood driver side).
While you are at it, check your ground wires.