Power steering belt

I am trying to replace my power steering belt. Today i moved to radiator fan shroud so that I could slip the old belt off. When I was ready i went under my car and here is where the confusion sat in. I was told my 1997 318iC uses three belts that progress in order towards the engine. I was told that the one closest to the fan is the power steerin belt. I held the new belt up to it and they are different width. I need to know where the powersteering belt is and which pully is the tensioner. If you have any diagrams it would be greatly appreciated. Thanks

The power steering pump belt is the one that drives the power steering pump. In essence, find your pump! You can do this by following the P/S hoses from the steering rack to the pump. Sure you have the right belt from the parts house? Hate to tell you this, I WOULD NOT TRUST any parts from anyone but a reputable BMW pasts supplier. They also have the highest quality you can get.