Garmin GPSMAP 12 2 Series Installation Instructions Manual page 6

Power/NMEA 0183 Cable
®
• The wiring harness connects the device to power, NMEA 0183 devices, and a lamp or a horn for visible or
audible alerts.
• If it is necessary to extend the NMEA 0183 or alarm wires, you must use 22 AWG (.33 mm²) wire.
• This cable provides one differential NMEA 0183 input and output port.
Item Wire Color
Red
Black
Blue
Gray
Brown
Violet
Orange
Yellow
6
Wire Function
Power
Ground (power and NMEA 0183)
NMEA 0183 TxA (Out +)
NMEA 0183 TxB (Out -)
NMEA 0183 RxA (In +)
NMEA 0183 RxB (In -)
Accessory on
Alarm low