[Elecraft] control cable from K3 acc to XV144 control

[W0WFH Bill]

I know this should be simple but having lots of problem finding
the pin out from the K3 ACC to the XV144 control.  Yes I have a KXV3a in my
K3.  I just need to know how to wire up the DB9 on the XV144 to the DB15 on the
K3.  Thanks Bill,W0WFH