Connection Considerations
When connecting this device to power and to other Garmin devices, you should observe these considerations.
• The power and ground connections to the battery must be checked to make sure they are secured and
cannot become loose.
• The cables may be packaged without the locking rings installed. The cables should be routed before the
locking rings are installed.
• After installing a locking ring on a cable, you should make sure the ring is securely connected and the o-ring
is in place so the power or data connection remains secure.
Connecting to Power
WARNING
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.
You should connect the red wire to the power source through the ignition or another manual switch to turn the
device on and off.
1 Route the power cable between the power source and the device.
2 Connect the red power wire to the ignition or another manual switch, and connect the switch to the positive
(+) battery terminal if necessary.
3 Connect the black wire to the negative (-) battery terminal or to ground.
4 Connect the power cable to the device, and turn the locking ring clockwise to tighten it.
Additional Grounding Consideration
This device should not need additional chassis grounding in most installation situations. If you experience
interference, you can use the grounding screw on the housing to connect the device to the water ground of the
boat to help avoid the interference.
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