Installation Considerations; Mounting Requirements; Unit Installation; Continued Airworthiness - Garmin GDU 37X Installation Manual

2.5 Installation Considerations

Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are
recommended for installation of the GDU 37X. Refer to
Appendix A 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.

2.6 Mounting Requirements

Refer to Appendix C for outline and installation drawings.

2.7 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

2.8 Continued Airworthiness

Maintenance of the GDU 37X is "on condition" only. Periodic maintenance of the GDU 37X is not
required. Instructions for Continued Airworthiness (ICA) are not required for this product under 14 CFR
Part 21 since the GDU 37X has received no FAA approval or endorsement.
2.9 Panel Cutout Template
Figure 2-3 can be used as a template when marking the panel for cutout. Dimensions below are to verify
accuracy of printout only, see
190-01054-01
Rev. D
Figure C-1.2 for complete dimensions.
Section 1.6 for wiring considerations and
Figure C-1.1 and
GDU 37X Installation Manual
Appendix B.
Figure C-1.2.
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