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Leave the shield drain wire unconnected. It is connected to the -DC internally and should not be connected, in order to act properly as a shield for RF noise.
The VHF "GPS GND" is the other wire of the NMEA signal - the white wire from the chartplotter.
The "GPS IN" wire from VHF (green) should go to the Navman Yellow wire.
THe VHF "ACC" thick black GND goes to a boat ground (-DC). Do not connect it to the NMEA gnd. If at all possible, connect this wire to the same ground point that the chartplotter is connected to. Connecting it to a different ground location on the boat may let the radio "float" at a slightly elevated voltage above ground and misbehave.
So:
1. The GPS shiny black to boat ground
2. GPS white to VHF brown
3. GPS yellow to VHF green
4 No connection: shield wire
5. VHF black ACC wire is a external speaker gnd and is not connected unless you have an external speaker.
6. THe VHF ACC thick black to boat gnd (not NMEA gnd)
That should work...
If it doesn't work =) try swapping the GPS NMEA wires, yellow and white (I wish companies wouldn't use "IN" as a designation - "+" makes it easier to connect stuff.)
Best Regards,
e
.::.
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