Index of Household Electrical Wiring Diagrams and Projects Index listing of wiring diagrams and instructions for fishing household wiring to extend circuits. Doorbell Wiring Diagrams-Wiring for hardwired and battery powered doorbells including adding an AC adapter to power an old house door bell. Home Cleaning and Repair Tips. Wiring Basics for Alternating Current | DoItYourself wwwyourself››Home AutomationHaving a basic knowledge of AC wiring can help with every instance of home electrical installation. AC stands for alternating current. As opposed to DC or direct current, AC is the kind of electrical power supplied to homes and other buildings (while DC power is primarily used as electrical energy).