Try opening the part and use "Edit Color". You can adjust the level of transparency there until the component looks like a wireframe view in the drawing.
That is what I did. I was thinking of something more like a global transparency adjuster valve that would adjust all of the transparent items all at the same time. Befor I thought about doing this I was just putting an extruded cut to the depth I needed to see. I might go back to doing it this way.