The FIRST
diagram is very specific on the construction of the electronics
in relation to itself.
However the sensor electronics is optional for the team to use.
FIRST has published a sensor
guide for the use and implementation of sensory units.
General Electrical tip:
Label, and twist the associated wires together. It keeps them
neat and organized if anything ever breaks.
Have at least one extra battery sitting on the charger while at
competition. You never want to be caught dead in the water without
any power.