Todays homebuilt aircraft avionics packages often incorporate a number of boxes behind the panel, all requiring a particular type of wiring to go with them (not to mention all the other power draws such as lights, flap motors, etc.). Its advisable, then, to consider the length and nature of the wiring to be included in your project from the moment you start building. Avionics techno Stein Bruch explains the how and why of managing the wiring requirements for your aircraft.