<p><font size="3">How do I get the Green and Yellow light to come on together with the 55006 Central station III.Or do I need to have the Yellow light on to run One analogue engine.I am told that I do is this correct.:thinking: </font></p><p><font size="3"> Regards.</font></p><p><font size="3"> Hans.</font></p><font size="3"><font size="3"><p><font size="3" /></p></font></font>