The system wiring diagram in the 40.00 service manual is similar too, but not exactly, as the wiring in the device.
I finally found the reed switches the freezer doors use, and they are in the hinge compartment on the doors.
You have to remove all the doors to access the 2 reed switches in the freezer doors.(4 doors)
The lighting in the freezers however, is in different area of the controls and on a seperate board, but I would assume is functional by the same switches.