The Most Important Pieces of Electrical Documentation

As new FRC controls system hardware comes out (i.e. Systemcore), these pieces of Electrical Documentation may be subject to minor change.
However, these are some pieces of information that I find essential and important for the Electrical Subteam to know:
Hardware Electrical (Drive of Citrus Circuits Electrical Practices)
Managing the FRC Controls System 
Status Light Quick Reference — FIRST Robotics Competition documentation 
How to wire a robot
And Finally, the most important piece of documentation:
Wiring Pattern language