Port
Wire Function
Wire Color
Pin Number
Input port 4
RX/A (+)
Black/white
RX/B (-)
Red/white
Output port 1
TX/A (+)
Gray
TX/B (-)
Pink
Output port 2
TX/A (+)
Blue
TX/B (-)
Blue/white
N/A
Garmin GPS in (unused)
White/Green
N/A
Garmin GPS out (unused)
Green
N/A
Alarm
Yellow
N/A
Accessory on
Orange
N/A
Ground (shield)
Black
N/A
Spare
N/A
N/A
Spare
N/A
Standard NMEA 0183-Compliant Device Connected for Two-Way Communication
Item
Description
12 Vdc power source
Power cable
NMEA 0183-compliant device
NMEA 0183 cable
Item
Garmin Wire Function
Garmin Wire Color
NMEA 0183 Device Wire Function
Power
Red
Power
Power ground
Black
Power ground
Data ground
Black
Data ground
RxA (+)
White
TxA (+)
RxB (-)
Orange/white
TxB (-)
TxA (+)
Gray
RxA (+)
TxB (-)
Pink
RxB (-)
GPSMAP 8000 Series Installation Instructions
9