Abstract: An electrical connector for use in a vehicular smart power multiplexing network is disclosed. Smart power connectors provide for connections between the power network and the various peripheral devices and components in a vehicle. The connector is comprised of two body portions which are electrically coupled when closed. The first body portion includes three connectors for electrical connection to the power network and the peripheral devices and components. The second body portion includes the smart power circuit and heat sink for dissipating heat generated by the power stage components. The smart power connector also has diagnostic capabilities for detecting device and component load failures.