Eagle Electronics Cuda 128 Portable - Manual (Page 22)

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For example, if you have to extend the power cable to the battery or
power buss, attach one end of the fuse holder directly to the battery or
power buss. This will protect both the unit and the power cable in the
event of a short. It uses a 3-amp fuse.
CAUTION:
Do not use this product without a 3-amp fuse wired into the power
cable! Failure to use a 3-amp fuse will void your warranty.
This unit has reverse polarity protection. No damage will occur if the
power wires are reversed. However, the unit will not work until the
wires are attached correctly.
MOUNTING THE SONAR UNIT: In-Dash or Bracket
You can install the sonar unit on the top of a dash with the supplied
bracket. It can also be installed in the dash with an optional dash-
mounting kit (FM-5 mount kit for Cuda 168EX, FM-6 mount kit for all
others covered in this manual).
In-Dash Installation
For the Cuda 168EX
The following figure shows dimensions for in-dash mounting a Cuda
168EX. The in-dash adapter kit includes a template for cutting the
mounting hole and complete installation directions on instruction sheet
988-0147-43.
NOTE:
The Cuda 168EX needs only one cable, but some of the other
products covered by the FM-5 instruction sheet use more. When
installing your unit, use the instructions for the transducer cable
and ignore references to any others.