Hi guys. I figured the problem. The 522i on the bow needed a software update. The current version was 1.0. I needed the 2.5 upgrade which allowed for the 2 units to share the same screen. My first attempt at download to a SD did not work, but I found out that if the SD card is High Definition it will not work so I will have to find a non-HD card or see if I can get a marine electronics store to download it for me.