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Avionics - Certificated

I am looking for the pinout specs for 1961 C185 au...

Loyal Hower


  I have my 1961 C185 (serial number 185-0110) in the avionics shop for a new transponder.  There is audio output from this transponder.  I have 1 unused circuit on my factory stock audio switching panel (transmit 1/2 select, and 4 speaker/headphone select audio circuits).  It is the next to the last switch on the right, originally labeled ADF.  Does anyone have the connector pinout information for the audio switching unit?  My avionics shop says there are lots of pins to choose from.  Before I have them pull the unit and try to map out all the pins, I am hoping to find a spec or diagram that will identify the proper connection.  So far I have not been able to find those details.  Any help would be appreciated.  Thanks.