Installation instructions
for 
2014+ DL1000 Over the Dash Shelf 

It's pretty simple. 
 
1.  Remove the four screws holding the windshield to the windshield support brackets.
 
2.  Place shelf between windshield brackets and windshield.
 
3.  Reinstall screws.

Note:  For 2014+ DL1000s, the spring loaded stock windshield mount can benefit from additional stiffer springs.  Not everyone needs them, but if you you think you do see the link.  Just put these additional springs around the factory springs to stiffen up the windscreen mounting.