Mounting The Sonar Unit: In-Dash, Bracket Or Portable; In-Dash Installation - Lowrance X51 Installation And Operation Instructions Manual

To unit
Power connections for the X51 and X58DF sonar unit.
If possible, keep the power cable away from other boat wiring, espe-
cially the engine's wires. This will provide the best isolation from elec-
trical noise. If the cable is not long enough, splice #18 gauge wire onto
it. The power cable has two wires, red and black. Red is the positive
lead, black is negative or ground. Make sure to attach the in-line fuse
holder to the red lead as close to the power source as possible.
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, Bracket or Portable

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 FM-4
mounting kit.
If you use the supplied gimbal bracket, you may be interested in the
optional GBSA-1 swivel bracket kit. This converts the unit's gimbal
bracket to a swivel mount which can be used on the dash or overhead
mounting positions. Installation instructions for the in-dash and swivel
mounting kits are supplied with the adapter kits.

In-Dash Installation

The following figure shows dimensions for in-dash mounting. The in-
dash adapter kit includes a template for cutting the mounting hole and
complete installation directions on instruction sheet 988-0147-44.
Black wire
19
Red wire with
3 amp fuse
12 volt
battery