Install the Wiring Harness
The unit comes with a wiring harness which connects the unit to
power and the transducer with one easy-to-remove connection, and
provides interface capabilities for connecting external devices.
The color code in the diagram (
see page 81/82)
indicates the appropriate
harness connections. The replacement fuse is a AGC/3AG - 3-Amp
fuse. If it is necessary to extend the power wires, use 22 AWG wire.
CAUTION:
DO NOT cut the transducer cable, because this
voids your warranty.
Wire the unit directly to an unused holder on your current fuse
block. If you are using the fuse block on the boat, remove the in-line
fuse holder supplied with the unit.
CAUTION:
The maximum unit input voltage is 36 Volts DC.
Do not exceed this voltage, because this can damage the unit and
void the warranty.
NOTE:
During a typical installation, use only the red and black
wires. The other wires do not have to be connected for normal
operation of the unit. For information on connecting to a NMEA
device
.
To install the wiring harness:
1. Use a test light or voltmeter to determine the polarity of the
voltage source.
2. Connect the red (+ or positive) wire to the positive voltage
terminal. (If you use the fuse block on the boat, route the
positive connection through the fuse, as shown on the
diagram.)
3. Connect the black (- or ground) wire to the negative voltage
terminal.
4. Install or check the 3-Amp fuse (on the fuse block on the boat
or in the in-line holder).
5. Align the notches on the cable plug and on the back of the
unit. Insert the cable into the connector, and turn the lock ring
counter-clockwise until it stops.
—
+
To 10-36 Volt boat supply
2A
3A
-
+
Boat ground
3-Amp
fuse
To unit
Fuse block
80
GPSMAP 580/585 Owner’s Manual
Appendix