Dad’s GPS-to-laptop cable suffered a bit of a failure: the DB-9 connector on the PC end pulled right off. I searched valiantly at Google for “GPS III cable pinout”, only to find lots of chatter about using GPS III or III+ units for APRS. Interesting, but not what I was looking for. In a fit of despair, I went to Garmin’s site and found a FAQ on PC wiring. That in turn linked to a PDF wiring diagram. I’m posting this in hopes that Google will index it so that the next person with a salt-rotted cable will be able to quickly find what they need.