Those who wish to build a custom cable for use with the MacPlot driver should follow the pin assignments below.
These are the corresponding pins for the MacPlot driver:
DIN 8 DB 9 DB 25 (male)
8 3 1
4 3 7
5 9 2
3 5 3
2 7 20
Note: The pin-out diagrams in the early manuals for MacProject II and MacDraw II were incorrect. Additionally, the wiring diagram was reversed.
Figure 1: Correct Pinout Diagram for plotter cables used with MacPlot