I am getting ready to run new air lines on my B753 which I ripped out to do a complete restoration. Now I need to figure out where to plumb all the air lines, including all the stuff under the dash, i.e. windshield wiper, front air brake, trailer brake, etc. Where can I find a good schematic diagram that will show me how to plumb these lines. I was really surprised that the windshield wiper motor had like 4 or 5 air lines going in and out of it. Thanks, Dennis