An apparatus for providing convenience services to a stationary vehicle independent of the vehicle's electrical system. At least one conduit is attached to a housing for transferring the services to a supply panel. The supply panel includes a face on which the various controls and connectors associated with the supplied convenience services, such as heating, cooling, electrical power, compressed air, computer network communications, telephone, video, and television, are disposed. The supply panel is dimensioned to interface with the stationary vehicle through an opening in the vehicle, such as a window or service door, and includes means for providing a substantially airtight seal for climate control.