Connecting the power/data cable – Garmin GPSMAP 188C Sounder User Manual
Page 104
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GPSMAP 188/188C Sounder Owner’s Manual
A
PPENDIX
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C
ONNECTING
THE
P
OWER
/D
ATA
C
ABLE
Connecting the Power/Data Cable
The power/data cable connects the GPSMAP 188/188C Sounder to a DC system and provides interface capabilities for connecting external
devices. The color code in the diagram below indicates the appropriate harness connections. Replacement fuse for the GPSMAP 188
AGC/3AG - 2 Amp fuse and a AGC/3AG - 5 Amp fuse for the GPSMAP 188C.
NOTE: During a typical installation, only the Red and Black wires are used. The other wires do not have to be connected for normal
operation of the unit.
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Max Coil Current
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PIN 13 (white) NMEA IN (Com 2 RX)
PIN 14 (green) NMEA OUT (Com 2 TX)
PIN 15 (red) Power
PIN 16 (brown) NMEA IN (Com 1 RX)
PIN 17 (blue) NMEA OUT (Com 1 TX)
PIN 18 (black) Ground
PIN 11 (yellow) Alarm Low
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Pin 11
Pin 15
Pin 13
Pin 14
Pin 18
Pin 16
Pin 17