Dear Community, The return light of my recently added G-Class unfortunately does not work. I noticed the whole thing when I noticed that the retrofitted rear camera is without function, or is not displayed on the radio so no signal fed. Of course I read in advance and checked the following things already: – light bulb is i.o. – cables are i.o. – connection with camera pulse generator or power supply is soldered and there comes after inserting the back My guess: The fuse may be defective? I would like to check that but unfortunately I find nowhere a schematic and in which of the whole fuse boxes the fuse is located. Does anyone have schematics? User manuals? Maintenance book? In case the fuse is in order only the switch on the selector lever comes into question? I would be very pleased to learn from your experiences and hope that I can solve the problem soon Greetings