Astro Van M V6-262 4.3L VIN Z (1994)
Fuse Block: Diagnostic Aids
Basic Electricity
Electrical power flows from the power source to a load device and then back to the source of power. The electrical circuit should contain a device to
open or close the circuit, such as a switch or relay, and a protective device (in case of an overload), such as a circuit breaker or a fusible link. Electrical
circuits can be set up as series circuits, parallel circuits, or series/parallel circuits. The circuits in this vehicle are normally parallel circuits.
CIRCUITS
Series Circuit
Series Circuits
In a series circuit, the electrical devices are connected to form one current path to and from the power source. In a series circuit the voltage is
shared equally by all the devices in the circuit.
Parallel Circuit
Parallel Circuits
In a parallel circuit, the electrical devices are connected to form more than one current path to and from the power source. In a parallel circuit the
voltage is constant and equal for each current path.
Series/Parallel Circuit
Series/Parallel Circuits
A series/parallel circuit consists of a single current path and a circuit with more than one current path to and from the power source.
Circuit Components