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What are the extra wires at the end of my GPS units power cable used for?

April 26, 2017cable extra GPS power Used wires

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What are the extra wires at the end of my GPS units power cable used for?

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A. Typically, the extra wires at the end of the Garmin power cable enable the customer to connect various marine electronics such as a VHF radio, autopilot, or other NMEA compatible devices to their GPS unit. If you need assistance wiring such devices, please refer to the wiring diagrams in the back of the owner’s manuals for the GPS device and the third party device.