Ahhh you mean on a 7.5 with AID...
I've got NavPro, so I don't know what happens with the basic nav, but I get the map in between the clocks, I assume you just get a compass.
It automatically selects that view when you activate navigation (with an active route).
If you want the direction arrows and lane guidance, you need to set the "view" mode (ie what is on the clocks) to "Navigation" then you get the arrows in the right hand clock.
Once of the other views shows the range in the clocks... personally, I've stopped worrying about the fuel gauge being hard to read on the go - when you get down to 50 miles remaining it displays the remaining range instead of the "needle" anyway.