Garmin gpsmap 198c sounder User Manual

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GPSMAP 198C Sounder Owner’s Manual 
99
A
PPENDIX
 > 
C
ONNECTING
 
THE
 P
OWER
/D
ATA
 C
ABLE
Connecting the Power/Data Cable
The power/data cable connects the GPSMAP 198C 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 is a  
AGC/3AG - 3 Amp fuse. 
  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. 
 
COM 2 Rx
 COM 2 Tx
 
COM 1 Tx
 COM 1 Rx
DC Power
 Source
DC Positive
(RX COM 1)
(TX COM 1)
(RX COM 2)
(TX COM 2)