Lowrance GlobalMap 5200C Operation Instructions Manual page 26

Front
Install the gimbal bracket. Orient the bracket so the arms slope to-
Drill a 1-inch (25.4 mm) hole in the dash for the power and antenna
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.
137.9
[5.43]
Front view (left) and side view (right) showing dimensions of the
GlobalMap when mounted on gimbal bracket.
After drilling the hole, pass the antenna connector up through the hole
from under the dash. Pass the power cable's bare-wire end down
ward the front of your unit.
173.9
[6.85]
Millimeter
[Inch]
23.4
[0.92]
157.9
[6.22]
56.9
[2.24]
20
72.9
[2.87]