I just talked with a Garmin technician and as Kevin22 said, you have to update your units and that you can only have one unit with a card.
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Ranger RT 188 (2016)
Mercury 4 stroke 115
Garmin 93sv bow
Garmin 106 live scope & console
Fantastic
John
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Ranger RT 188 (2016)
Mercury 4 stroke 115
Garmin 93sv bow
Garmin 106 live scope & console
9line, I just went thru this ordeal myself. My problem was that both units needed the same update like you did. I also networked mine with a tp-link 5 port desktop switch, a 12 to 5 volt reducer, a couple of Garmin cable ends and a couple of ethernet cables. All is good now! :-)
"If people concentrated on the really important things in life, there'd be a shortage of fishing poles."