Mounting Requirements; Panel Cutout Template; Grounded Connector Shell; Unit Installation - Garmin G3X Touch Installation Manual

6.4 Unit Installation

Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are
recommended for installation of the GDU 37X. Refer to
Section 25.3 for pinouts.
Connector kits include backshell assemblies. Garmin's backshell connectors give the installer the ability
to quickly and easily terminate shield grounds at the backshell housing. The instructions needed to
assemble the backshell connector w/Shield Block grounding system are located in
NOTE
The GDU 37X rear connector (J3701) is electrically isolated. For installations using
shielded cables, a ground pin must be tied to the connector shell (Figure 6-3).

6.5 Antennas

Refer to Section 22 for antenna information.
NOTE
GDU 37X units cannot be used with GA 35, GA 36, or GA 37 antennas.

6.6 Mounting Requirements

Refer to Section 6.7 for outline and installation drawings.
6.6.1 Unit Installation
The GDU 37X is installed by holding the unit flush with the instrument panel and fastening the four
captured 3/32" hex socket head screws to the panel as shown in
6.6.2

Panel Cutout Template

Figure 6-4 can be used as a template when marking the panel for cutout. Dimensions on the figure are to
verify accuracy of printout only, see
drawing is also available for download at
190-01115-01
Rev. AC
GDU 37X GDU 37X
SIGNAL GROUND SIGNAL GROUND
Figure 6-3 Grounded Connector Shell
Figure 6-6 for complete cutout dimensions. A .dxf version of the
www.garmin.com.
G3X/G3X Touch Installation Manual - GDU 37X Installation
Section 2.3 for wiring considerations, and to
P3701 P3701
35 35
GARMIN SHIELD GARMIN SHIELD
BLOCK GROUND BLOCK GROUND
Figure 6-6.
Section 24.
Page 6-4