Finding the Fuse for the Auxilliary Power Outlet

Usually it is the fuse that runs the stereo also but I have no clue on a ranger easy way to figure out is just get some type of electrical unit that will plug into it and you could tell when it has or is getting power while you are pulling fuses to find it but my bad im guessing it has no power lol thats why your looking for fuse hmmm first I would check all fuses the fuse box should be on the driver side of dash when you open the door and if none of the fuses are blown then thats not the problem because the fuse for cig lighter is on that board if you get nowhere with that I would then check to c if the positive and neg leads are pluged into the outlet by removing the stereo