Here are the pinouts for connecting a Thomson 4375M Ultra Scan monitor to
the Macintosh II video card:
Macintosh II Thomson UltraScan signal name
-------------------------------------------------
1 ------------ 3 red video ground
2 ------------ 2 red video
3 ------------ 7 Composite TTL sync (negative going)
4 ------------ 1 sync ground
5 ------------ 4 green video+ Composite analog sync
6 ------------ 5 green ground
9 ------------ 14 blue video
13 ------------ 15 blue ground