This diagram illustrates the part master data of component boxes. A component box is used to mount components (e.g. relais and fuses). Component boxes exist in a great variety from rather simple to quite complex.
Basically a component box consists of Component_slots & Component_cavities. These can be used to mount components.
The harness can be attached to a component box in two ways. either with a connector or directly with wires that are mounted into cavities (with terminals) or attached to bolts (with ring terminals). Both aspects are covered by the Component_box_connector.
A Component_box_connector consist of both Slots (the same class that is used for Connector_housings) and Modular_slots. A Modular_slot is used if the Component_box itself is modular and consists of one more insets.
The Component_box_connection can be used to define the internal connectivity of a component box.