[aprssig] Tap into in-dash GPS Navigation for APRS?

[Tyler Allison]

> Has anyone had success finding a serial port on an OEM in-dash
> navigation system?  In my case it is in a Dodge and I have found that
> the manufacturer is Alpine.  I haven't had an opportunity to take it
> out to see if it has a serial connector on the back.  I doubt that I
> will get that lucky, but maybe there are serial pinouts somewhere
> inside the unit.  Has anyone explored this?

I know folks have been able to tap into the OnStar system's GPS unit so I
would suspect it's gotta be doable if you can find the right pins.

-Tyler