Unfortunately, the best info I know is on Amibay, which is down right now.. ;-(
I just built a cable for mine..
It's basically 5 wires (my 8200 came with a 6 wire header for RGB).
You need the RGB pins connected.
Then CSYNC (pin 10 on the 23pin I think) and ground..
Once you do that, you have to connect it, and then hold the DOWN button for several seconds.
That part was tricky for me.. I thought I did it, but it didn't work..
Trying it again worked, and it's been good since..
It's possible you have to select the proper mode first, and then hold DOWN.
There were a few things I tried, and that was one of them..
OK, just looked here:
http://old.pinouts.ru/Video/AmigaVideo_pinout.shtmlI used
Amiga 8200
2 RED RED
3 GREEN GREEN
4 BLUE BLUE
10 CSYNC GREY
16 GND BLACK
desiv
p.s. ByteRyder beat me to the answer (I edited in my answers as he entered his) ;-)
I didn't use Yellow. In fact, I remove it from the header..