Today connected wires to the mode panel and the CDU and did some measurements to verify what my pinouts tell me. For both panels I seem to have the correct pinouts and the CDU even sends out digital data when powered up (28V DC, drawing around 0.5Amps):
But I am somewhat struggling with the pinout of the plugs on the rear side of the LTN72...
...here my pinout says gound on J2A 7, J1B 2,4. But I do not see the ground pins being connected. So am I right, that the A parts are the upper halves and the B the lower ones and that the numbers given on the plugs are OK? From my DC10 (Laker airways) schematics I see that 115VAC should be connected to J1B, pins 1 and 3 and 28VAC (excitation for attitude outputs) is to be sent to J2A pin 6.