I wonder if anybody can help? A freind of mine has an 97 transit based elnagh king. On the dashboard is a round green pushbutton that we cannot work out what it does. Also it uses a unit under the bonnet ......separatore automatico csb40-s that we could use some information/wireing diagram on, as at some point someone has fiddled with the wireing leaving the fridge permanantly connected to the vehicle battery even when ignition is off.