My new wiper system. I never really liked the L model wiper system. The standard B I thought was much better and was certainly more refined. You can throttle it back so it sweeps so slowly, you don't need a intermittent. Plus, the arms park and stay parked when not in use. None of that occurs in the L cab. With that in mind, when I cut apart my cab I removed all the air supply lines from the center windshield post. Now that I'm at the point of the rebuild where things are going back together, I needed to figure out what I was going to do. The search took a while, but this is what I came up wit