We had a very nice wiring setup this year. Three things contributed to this.
The first was to have enough room for the wires to lay flat on the belly pan. We did three iterations of parts placement to get one that fit well. Then we cut it on a laser cutter from 3/8 plywood. The main thing in parts placement is to put the motor controllers between the PD board and the motors, so you don't need to make long wire runs! We used Talons and lined them up in two rows, one on each side of the PD board.
The second is to wire the power stuff with wire that's just long enough, and force it to lay flat against the belly pan. Make the corners square, so it looks neat. That trick by itself is 90% of the secret!
Third, we wired up the PWM and sensor wires on a second layer "floating" above the power wires, using a series of 1" long Vex standoffs and P-clips to support the wires over the power wires. This made a clean package of those wires that usually go all over the place.
The result was that our robot won two engineering awards and was shown to other teams by the inspectors as an example of how to do it right.
