Hi Fahim
I have made a couple of auto guider cables to connect various equipment to SBIG gear:
Vixen Skysensor 2000 to SBIG ST7.
Tak EM200 Temma II to SBIG ST7.
Tak EM200 Temma II to CFW8A / ST7 combo.
I have generally found the information a little difficult to get so I ended up matching the RA+, RA-, DEC-Up, DEC-Down and Ground pin descriptions from the Vixen and Tak specs to the SBIG specs and this has always worked.
The attached screen print from the URL shows two ST-4 entries (1st and last) that may be helpful?
Another suggestion would be to check the Files section in the Losmandy Yahoo Group – I suspect there should be a description there, just like there was on the Tak Yahoo Group.
Here is another link that may be useful:
http://www.sbig.com/sbwhtmls/st4_howto.htm
Cheers
Dennis