if you need manuals for the radio in PDFhttp://www.n6wk.com/kenwood/
you can build your own cable if you want,
or there is a guy on ebay selling them.
the 9 pin connectors are available.
if you are not using the external VFO you will need
to verify the 9 pin plug is inserted at the rear of
the radio, otherwise it will not pass the 9v to the
If it is missing you can jumper pins
8 and 9 at the socket. Details on page 10 of manual.
join other kenwood ts-5xx and 8xx hybrid fanshttp://groups.yahoo.com/group/TS-520_820_530_830/