Richard, here is the complete 1080 monitor pinout, from the service manual:
Pin No. | Digital Pos. | Digital Neg. | Analog
——–|—————|————–|——-
1 | Ground | Ground | Ground
2 | Ground | Ground | Ground
3 | Red | Red | Red
4 | Green | Green | Green
5 | Blue | Blue | Blue
6 | Intensity | Intensity | –
7 | – | – | CSync
8 | H. Sync | H. Sync | –
9 | V. Sync | V. Sync | –
Shell | Shield | Shield | Shield
Video Polarity | Positive | Positive | Positive
Sync Polarity | Negative | Negative | Negative