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Drill a 1-inch (25.4 mm) hole in the dash for the power and transducer
cables. The best location for this hole is immediately under the gimbal
bracket location. This way, the bracket can be installed so that it covers
the hole, holds the cables in position and results in a neat installation.
Some customers, however, prefer to mount the bracket to the side of the
cable hole — it's a matter of personal preference.
Front view (left) and side view (right) showing dimensions of the
sonar unit when mounted on gimbal bracket.
After drilling the hole, pass the transducer connector up through the
hole from under the dash.
Pass the power cable's bare-wire end down though the hole from the
top. If you wish, you can fill in the hole around the cables with a good
marine caulking compound. (Some marine dealers stock cable hole
covers to conceal the opening.) No matter what type of installation you
prefer, be sure to leave enough slack in the cables to allow tilting or
swiveling the unit. If you fill in the hole, be sure to position the cables
against the rear edge of the hole as you apply the fill material.
Before positioning the bracket, hold the cables against the rear edge of
the hole, then slide the bracket over the hole and butt the rear of the
bracket base firmly against the cables. That will pin them in place
against the side of the hole. Finally, fasten the bracket to the dash.
Attach the unit to the gimbal bracket using the supplied gimbal knobs
and washers.
Millimeter
[Inch]
23.4
[0.92]
72.9
[2.87]
137.9
[5.43]
56.9
[2.24]
157.9
[6.22]
173.9
[6.85]