It is direct from the pcb. J3 (terminal of double pole switched Relay) via black/white wire to connector and from connector to one of the stat 1 via Grey wire. From mains neutral via blue/white to connector and from connector to stat 2 via orange wire.
Should J3 relay controlled terminal be the live supply to heating elements via stat 1 ?
Should J3 relay controlled terminal be the live supply to heating elements via stat 1 ?