Simple enough. Ensure you pick your PG700 as your heading source in the Data Source list (MENU- SETTINGS- INITAL SETUP - DATA SOURCES) When you do, the heading data should be viewable on that screen to the right of the selection. To see it on your plotter or radar screen, slide out your data box and tap an open area to create a new box, then pick "HEADING" as what you want. It should then be viewable anytime you have your databox open.