Evening Gert,
As requested the circuit diagrams
However the lighting of the switches is not mentioned as it is internal to the switch itself the temperature control switch has Part Number JTB100340 and costs €55,82 inc BTW and Kimman Haarlem have one on the shelf that has been there for quite a while so possibly will give discount (tell Fred that the stupid Englishman Rob told you that), incidently the Fan Control Switch, Part Number YUK100270 is €32,72 inc BTW but no one has it on the shelf.
Oh and don't bother looking for a Replacement (Britpart, Bearmach or other) or OEM for a cheaper price as they don't exist ... I already checked

Rob