Thats hard to say. Did both the signals and wipers stop working at the same time?
You say you have power to the wiper motor right? Did you check for ground? Usually when the wipers stop working the motor is the problem but since your signals stopped working too I'd assume its something else.
i put a new wiper motor on the car they still dont work so is there a relay or a certain wire that controls the flashers and wipers or is it the steering column switch my bright lights is the only thing that works on the column