Before removing the R9 system from the aircraft the technician removing the unit should label the connectors, this is essential for a quick reinstallation of the R9 back into the aircraft. 

For the DVX, there are 4-coax connectors:

Com J145
Nav J141
Glideslope J142
Not used J143 (marker beacon - no longer used)

Specifications on the DVX are listed in the installation manual (currently 600-00160-000 Rev20, pg 11-12)