We are unable to see the schematic that you mention, however from the 3D box, you will need to run 1 ethernet cable to each unit. The the NMEA 2000 kit, you will have 1 t-connector for each device, plus 1 for a power node, the ends of the network will be capped with terminator kits.
answered 2 months ago
Lowrance - Technical Support
No other cables should be needed.
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