private void setupLowlevel() throws D-BusException, D-BusExecutionException {
 bus = D-BusConnection.getConnection(D-BusConnection.SESSION);
 bus.addSigHandler(Navit.Signal.class, signalHandler);
 bus.addSigHandler(Navit.Startup.class, this);
 navit = bus.getRemoteObject(SERVICE_NAME, Navit_NODE_NAME, Navit.class);
 gui = bus.getRemoteObject(SERVICE_NAME, GUI_NODE_NAME, Gui.class);
 graphics = bus.getRemoteObject(SERVICE_NAME, GRAPHICS_NODE_NAME,Graphics.class);
 vehicle = bus.getRemoteObject(SERVICE_NAME, VEHICLE_NODE_NAME,Vehicle.class);
 route = bus.getRemoteObject(SERVICE_NAME, ROUTE_NODE_NAME, Route.class);
}