I agree with what everyone else was saying. IMO, the most important parts for cleaner wiring are having an electrical sub-team,planning out where everything goes ahead of time, and most importantly leaving time for wiring, if possible. This past year, once we had the basic dimensions of the drivebase, a few people on the electrical sub-team CADed out an electrical pan and did placement of where all the components would be. It ended up helping greatly. As this was my first year on the electrical team, the thing that helped me the most was doing wiring during off-season. We had to rebuild our 2013 robot and I ended up getting practice by doing the pwm crimps for the old bot. If there are things needing to be wired during off-season, maybe let your newer students practice. Just some thoughts...
Here's a article I found about some wiring for robotics that might help.
https://frcdesigns.com/2015/07/22/fr...rsus-function/
And also don't be afraid to use a plethora of zipties, fasteners, etc.
