How do I send nav data from my standard horizon 390i to my furuno model 1623? My 390i manual clearly outlines which wire sends the nmea signal to other devices, my furuno manual does not tell me what colour wires in the furno nmea cable to connect to receive navigation information
Answers & Comments
TXA and TXB are the two data lines.
Confirm data present with digi meter then hook up. Try both polarities
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