Cable Installation - Garmin GNC 420A Installation Manual

3.6

CABLE INSTALLATION

1. Route the coaxial cable to the rack location keeping in mind the recommendations of Section 2.
Secure the cable in accordance with good aviation practice.
2. Trim the coaxial cable to the desired length and install the BNC connector (330-00087-00) per
the cabling instructions on Figure 3-1. If the connector is provided by the installer, follow the
connector manufacturer's instructions for cable preparation.
3. The card-edge connector may be used to terminate shield grounds to the 400 Series back plate.
4. Feed wires through the connector backshells before insertion into the 78, 44, and 25 pin connectors.
5. Contacts for the 78, 44 and 25 pin connectors must be crimped onto the individual wires of the aircraft
wiring harness. The following tables list contact part numbers (for reference) and recommended crimp
tools:
78 pin conn
(P4001)
Connector Type High Density Pin Contact
Wire Gauge
Garmin P/N
Military P/N
AMP
Positronic
ITT Cannon
400 SERIES INSTALLATION MANUAL
P/N 190-00140-02
Figure 3-1. Coaxial Cable Installation
CAUTION
Table 3-1. Pin Contact Part Numbers
44 pin conn
(P4006)
Standard Density Socket Contact
22-28 AWG 18 AWG
336-00021-00 336-00023-00
M39029/58-360
204370-2
M39029/58-360 FC6018D
030-2042-000 See Note 3
25 pin connector (P4002)
20-24 AWG
336-00022-00
N/A M39029/63-368
N/A 205090-1
M39029/63-368
031-1007-042
Shield ground
connector
.1" Pitch Card-edge
20-24 AWG
336-00029-00
N/A
583853-4
N/A
N/A
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