Garmin GSD 20 Installation Manual - page 6
4
Installation
WIRE
COLOR
WIRE
COLOR
18 AWG
18 AWG
2 A
1.5 A
ALARM
SEE NOTE 2
GARMIN GSD 20
SOUNDER MODULE
BLACK
GROUND
ORANGE
ON (REMOTE POWER)
RED
POWER IN
WHITE/BLUE
WHITE/BROWN
YELLOW
ALARM
GROUND
BLACK
DATA OUT
BLUE
POWER IN
RED
DATA IN
BROWN
PORT A IN
PORT A OUT
SHIP'S BATTERY
10-35 VOLTS
GARMIN
GPSMAP UNIT
NOTES:
1. ALL WIRES 24 AWG OR LARGER UNLESS OTHERWISE NOTED. FOR RUNS OVER
30' (9.1 m), USE 4-CONDUCTOR, SHIELDED 24 AWG WIRING.
2. THE ALARM OUTPUT CAN BE USED TO DRIVE A LAMP, HORN, OR BOTH.
MAXIMUM CURRENT IS 100 MILLIAMPS. A SWITCH OR RELAY CAN BE USED
TO SELECT BETWEEN VISUAL AND AUDIBLE ALERTS, IF REQUIRED.
3. FOR RUNS OVER 30' (9.1 m), THE DRAIN WIRE MUST BE CONNECTED TO THE
SHIELDING OF THE EXTENSION RUN. DO NOT TERMINATE THE END OF THE
SHIELD DRAIN WIRE.
4. IN ORDER TO UPDATE THE GSD 20 SOFTWARE, THE GPSMAP UNIT MUST BE
CONNECTED TO PORT A OF THE GSD 20.
5. THE ORANGE WIRE MUST BE PULLED LOW (-) IN ORDER FOR THE GSD 20 TO
POWER ON. IF THE GSD 20 IS BEING WIRED TO A CIRCUIT THAT IS ALREADY
SWITCHED ON THE POSITIVE (+) WIRE, CONNECT THE ORANGE AND BLACK
WIRES TO THE SAME GROUND AND DO NOT INSTALL A SWITCH. THE GSD 20
WILL TURN ON/OFF WHEN POWER IS APPLIED/REMOVED TO THE RED (+) WIRE.
TWO SWITCH LOCATIONS ARE SHOWN, BUT ONLY ONE SWITCH IS NEEDED.
BARE DRAIN WIRE - N/C DO NOT TERMINATE
BARE
SHIELD DRAIN
WHITE/RED
WHITE/BLACK
PORT B IN
PORT B OUT
BASIC WIRING FOR GARMIN GSD 20 TO SINGLE
GPSMAP 182/182C/232
+
-
SEE NOTE 3
SWITCH - SEE NOTE 5
Closed - ON
Open - OFF
SWITCH - SEE NOTE 5
OR
Wiring
GSD20 Manual.indd 4
9/24/2003, 3:01:02 PM