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GDU 37X Installation Manual – Installation Overview Page 1-5
190-01054-01 Revision B
1.6.3 Cable Installation
1. Route the coaxial cable to the unit location. Secure the cable in accordance with good aviation
practices.
2. Trim the coaxial cable to the desired length and install the BNC connector (330-00087-00) per
the cabling instructions on Figure 1-1. If the connector is provided by the installer, follow the
connector manufacturer’s instructions for cable preparation.
Figure 1-1. Coaxial Cable Installation
3. Contacts for the 50 pin connectors must be crimped onto the individual wires of the aircraft
wiring harness. Table 1-5 list contact part numbers (for reference) and recommended crimp
tools.
1.6.4 Backshell Assemblies
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 Appendix B.