I just took a look at your manual and I see what you mean. Try this, which is based upon my eTrex Vista C. Hopefully, it will be similar enough to your unit that it will work for your.
When you are on the compass page, press the Menu/Find button on the left side of the unit to display menu options. There should be one for Data Fields and another for Change Data Fields. If you select Data Fields, you can change how many data fields are displayed on the compass page. If you select Change Data Fields, if allows you customize each data field to show what you want it to show. When you select this option, one of the data fields should then show a shaded background. Press down on the toggle switch to display different data options to choose from for this field. Toggle up or down to find your preferred data field and then press down on the toggle to select it. Then use the toggle switch to move to another data field and select it. Press the Quit/Page button on the right side of the unit when you are done and want to save your selected settings. Unfortunately, I don't believe "coordinates" is one of the options you can select for the compass page. I use Speed, Distance to Destination, and Destination. You can go through a similar process to set the number of data fields and displayed data on the map page. I hope this helps. Good luck!
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