Summary: control current through the main and essential busses. Should I ever need to switch off the main bus, I can still power the essential bus through the alternate feed from the battery bus. Wire Bundles (April 2001) I am amazed at the number of wires it takes to power up the goodies in this aircraft! If you consider that I have a dual alternator system with 3
Image Dimensions: 640 x 480
Image originally found here.