I completed the replacement hinge assembly by adding a 3/16″ shim between the hinge and the base to position it correctly so that the control box will sit square on its base.  After that, work has contentrated on wiring the lighting and 24v supply to the multicore cable terminal mounted on the cab rear bulkhead below the floor.  Connections that need to be made in the cab-mounted control box havebeen sheathyed and routed into their correct positions ready for reinstallation of the control box.    The control box itself has had attention: all the terminals and nuts have been cleaned, the 2BA terminals having new brass nuts.  The main battery switch has had its shaft painted black.

All the wiring has now been tested, including the brake light switch,  horn and button, and the panel light switch both at the cab end and in the boot where appropriate so I am happy now that its all correct.  Also tested now are the starter motor cables, dynamo cables and the starter sloenoid cable.