Humminbird 700030-1 | AS HHGPS Handheld GPS Connector Cable GENERAL_HEAD_AND_PLUMBING_REFRESH Fits Mercury 3

Humminbird 700030 1 AS HHGPS Handheld GPS Connector Cable GENERAL_HEAD_AND_PLUMBING_REFRESH Fits Mercury 3 Fits Mercury 3 9" x 12" (23 x 30 They can either 1) plug in a GPS receiver into the accessory bus to get either GPS track plotting or chart plotting data depending on the unit's capabilities 2) plug in a GPS receiver along with the System link cable to allow two different units fishfinders to share one GPS receiver or 3) plug in any of the four available GPS handheld cables that allow GPS track plotting data to be transferred from any handheld GPS that has NMEA output capability to the fish finder and displayed on the fishfinder screen