my windshield wipers, radio, power to my windows and locks went out at the same time
Hmm maybe look under the drivers side dash, or in the glovebox. If you have an owner's manual, it will tell you where your fuse box is.
It could be under the dash drivers side, glovebox, some old ones have them on the fire wall. What year and model is it.
what year make and model to start, all cars are very different, if you still have the owners manual it should tell you were the fuse block is located and which fuses do what.