Avtrician, many thanks...what an interesting site! All the pin connections for power and serial etc. Using an old mouse tail as a data cable...great idea.
I spent some time flying with GPS but have never used one on the road. My grandson (5) in the back pressing buttons and uttering ‘neat, cool' etc. Long time since ten bucks has given so much fun.
I have yet to read most of the Garmin download, but so far it seems pretty good. Plus, an offer of a free manual!
Now to get to grips with the software side.