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GPS City Q&A » Marine Network » Would a fuse in the NDC-4 ground wire provide any protection?

Marine Network (1 reply)

Item

Original Question

Would a fuse in the NDC-4 ground wire provide any protection?

› Lowrance NMEA 0183 Adapter Cable

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Reply

Salty Dog
St. Petersburg

Original question asked on Feb 24, 2012, 6:15pm

Connecting a Lowrance Elite 5 DSI to an Icom IC-M422 with the NDC-4 adapter cable. The cable's yellow/transmit to the radio's red/in and cable's orange/receive to radio's white/out appear straightforward.

However the radio has only those two red and white NMEA wires. Is it ok to connect the NDC-4 black wire to the radio's power supply ground wire? Would a fuse in the NDC-4 ground wire provide any protection to the GPS in case of spikes across the vessel ground wiring? Can you offer any suggestions?

Thank you.

Jordan
GPS City

Reply #1 on Feb 27, 2012, 5:30am

The NDC-4 black wire will go to your common ground shared between the power supply, radio and GPS. No need to worry about a fuse for there is no power shared between the connections just data and ground.

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