A customizable bus system includes a system module containing one or more accessory modules and is easily mounted along a surface in a workspace, such as the underside of a cabinet. The accessory modules provide conveniently located utility services and applications such as power, lighting or media connections, and may be interchanged within the bus system to provide particular services and applications where they are needed most. Additionally, the bus system may include a control center for controlling the operation of one or more of the accessory modules, such as manually or automatically. The bus system may also include multiple housings that are functionally linked, such as by a connector module having couplings for mechanically linking with housings and providing electrical or other connectivity between the housings.