90 Wagoneer Limited - There is a large vacuum harness on the front of the engine, kind of beside the airbox. What exactly does it do, and is there a way to get rid of it. Would really like to clean up the engine bay a little bit. Looks like one of the lines runs to a sensor on the fender, but then it loops back into the harness on the engine. Anysuggestions on removal? Thanks.....