NOTE: These are temporary, to be replaced by real diagrams later.

 
 CABLE FOR "Bag & Installed phones" (gray, silver, or black Box)
 
DB25 MALE to PRN PORT - - - - - - - - - connector "A"
DB25 FEMALE to TRANCEIVER - - - - - - - connector "B"
 
 
 A.1 to B.18
 A.2 to B.21
 A.3 to A.14 to B.17
 A.4 to B.1
 A.12 to B.12
 A.13 to B.11
 A.17 to B.20
 A.18 to B.14 to B.23
 A.20 to B.23
 
         B.3 to Ground (12 volt supply to Tranceiver)
         B.4 & B.5 to +12 volts (use a cig lighter plug)