[R-390] R-390/URR with K7DYY Super Senior - break in

[Frank Hughes]

Hi,
Anyone using one of K7DYY's AM transmitters w/ an R-390/URR?
I'm trying to wire up a break-in circuit.
Have not used the Super Senior in years, can't remember how I did this before... 
The Index Labs schematic shows how the built-in form "C" relay is pinned out.
How are the AUX connector pins arranged? 
Need to find pins 3,4,5.
The AUX connector has a key at the top.  
I looked for any pin numbers inside the connector, none found.
73,
Frank
KJ4OLL


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