wiring diagram usually gives information about relative position and arrangement
A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. A wiring diagram usually gives information about the relative position and arrangement of devices and terminals on the devices, to help in building or servicing the device. This is unlike a schematic diagram , where the arrangement of the components' interconnections on the diagram usually does not correspond to the components' physical locations in the finished device. A pictorial diagram would show more detail of the physical appearance, whereas a wiring diagram uses a more symbolic notation to emphasize interconnections over physical appearance.
A wiring diagram is often used to troubleshoot problems and to make sure that all the connections have been made and that everything is present. nterconnecting wire routes may be shown approximately, where particular receptacles or fixtures must be on a common circuit.