Hi Andre,
Do you mean the EQDIR cable for the Skywatcher mounts (HEQ5, AZ-EQ6 or EQ6)?
You could try Bintel... I bought the AZ-EQ6 cable a few months ago and it works perfectly.
http://www.bintel.com.au/Mounts---Tr...oductview.aspx
http://www.bintel.com.au/Mounts---Tr...oductview.aspx
Note: If you have an AZ-EQ6, then it uses the same cable as the HEQ5.
Cheers,
Mark