Fitting instructions for most OEM accessories are available in TopiX, select your vehicle model / model year, click on Documents, Accessory Fitting, Exterior Protection for the A Frame Protection Bar.
You don't need to register to view these documents or the owner's manuals (and registration is free anyway), but if it's your first visit to Topix you may need to specify your market / language first.
http://www.landrovertechinfo.com
As the front end and bumper of the 2014 LR4 were somewhat redesigned, I can see how the guard that fits 2010-13s would not be compatible anymore.