relay for door locks

2001 f-250 .the problem is after you press the buttons a few time they loose power and dont move at all .then i wait about ten seconds and the power is back .they will open or close once ,then you got to wait again.would that be the relay coils if so where are they at

Hmmmm...having similar prblem only with the windows...dome light and wipers at the same time. Did you find out anything??