You do realize there is basically no difference on a one axle trailer? The only difference is you may have 2 feet of wire going one direction and 8 feet going the other. With 3.75 A/magnet @ 12V that is only a 0.3V difference assuming the magnets are exactly the same and they never are.Note: STAR design brake wiring can be installed on single axle trailers as well.
I kind of like factory manuals. I figure the factory that designed the brakes knows what is sufficient!Instead of quoting factory manuals...