Garmin GPSMAP 12 2 Series Installation Instructions Manual page 7

Connecting the Wiring Harness to Power
When connecting the power cable, do not remove the in-line fuse holder. To prevent the possibility of injury or
product damage caused by fire or overheating, the appropriate fuse must be in place as indicated in the product
specifications. In addition, connecting the power cable without the appropriate fuse in place voids the product
warranty.
1 Route the wiring harness to the power source and to the device.
2 Connect the red wire to the positive (+) battery terminal, and connect the black wire to the negative (-) battery
terminal.
3 If necessary, install the locking ring and O-ring on the end of the wiring harness.
4 Insert the cable into the POWER connector on the back of the device, pushing firmly.
5 Turn the locking ring clockwise to attach the cable to the device.
Additional Grounding Consideration
This device should not need additional chassis grounding in most installation situations. If you experience
interference, the grounding screw on the housing can be used to connect the device to the water ground of the
boat to help avoid the interference.
Garmin Marine Network Considerations
A Garmin Marine Network PoE Isolation Coupler (010-10580-10) must be used when connecting any third-party
device, such as a FLIR ® camera, to a Garmin Marine Network. Connecting a Power over Ethernet (PoE) device
directly to a Garmin Marine Network chartplotter damages the Garmin chartplotter and may damage the PoE
device. Connecting any third-party device directly to a Garmin Marine Network chartplotter will cause abnormal
behavior on the Garmin devices, including the devices not properly turning off or the software becoming
inoperable.
This device can connect to additional Garmin Marine Network devices to share data such as radar, sonar,
and detailed mapping. When connecting Garmin Marine Network devices to this device, observe these
considerations.
• All devices connected to the Garmin Marine Network must be connected to the same ground. If multiple
power sources are used for Garmin Marine Network devices, you must tie all ground connections from all
power supplies together using a low resistance connection or tie them to a common ground bus bar, if
available.
• A Garmin Marine Network cable must be used for all Garmin Marine Network connections.
◦ Third-party CAT5 cable and RJ45 connectors must not be used for Garmin Marine Network connections.
◦ Additional Garmin Marine Network cables and connectors are available from your Garmin dealer.
• The ETHERNET ports on the device each act as a network switch. Any compatible device can be connected
to any ETHERNET port to share data with all devices on the boat connected by a Garmin Marine Network
cable.
WARNING
NOTICE
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