For the ones that are built on the Maxtrac 800 chassis, they are programmable with Maxtrac Trunked software & cable. The other ones (500, 750 & certain 1000's) are programmable with the DATA I/O unit & a computer.
Privacy Plus 1000
The part number for the instruction manual is 6881064E20.
If you are looking for the schematic for the Hang-up Cup for these radios, check here.
You can also find the pinouts of the various connectors in the radio by checking here.
If you need the pinout of the cable that goes between the radio and the hang-up cup, you will want to look here.