1. A system of wiring, switches, relays, and other electrical equipment that is associated with receiving and distributing electricity.
2. All of the conductors and electricity that use devices which are connected to a source of electromotive force or generator.
3. The equipment in a motor vehicle that provides electricity to start the engine and to ignite the fuel, to operate the lights, the windshield wipers, the heater, the air conditioner, and the radio.