I'm in the process of finally putting my 81 BJ42 back together. I'm just not quite sure how the rear brakes hook up. It has the load sensor proportioning valve that mounts on the frame and the line goes down to the axle. Well I remember that 2 brake lines ran back there and I just don't know how to hook them up to the valve. There are 2 places on the side where they tie in. I just need to know the line that is actually running to the rear, where does it thread into and the front brakes run back there too and I don't know where to thread them in. If any has a diagram of this or knows what I'm talking about and can help I would appreciate it.