Garmin GDU 370 Installation Manual page 20

1.7.1 Wiring Harness Installation
Allow adequate space for installation of cables and connectors. Ensure that routing of the wiring does not
come in contact with sources of heat, RF or EMI interference. Analog Input wires routed too close to
spark plugs, plug wires, or magnetos may result in erratic readings.
The installer shall supply and fabricate all of the cables. Required connectors, etc. are provided with the
G3X Installation Kit (K10-00017-00). Electrical connections are made through D subminiature
connectors for the GDU 37X and GSU 73 units, and through a round 9-pin connector for the GMU 44.
Appendix A defines the electrical characteristics of all input and output signals. Required connectors and
associated hardware are supplied with the connector kit..
Check wiring connections for errors before connecting any wiring harnesses. Incorrect
wiring could cause internal component damage.
Table 1-7. Pin Contact and Crimp Tools Part Numbers
LRU Contact Type
Socket, Mil
GDU 37X
Crimp, Size 20
GSU 73
GTP 59
011-00979-20
(Config
Pin, Mil Crimp,
module
Size 22D
w/EEPROM
kit)
011-00981-00
(thermocouple
kit)
Socket, Mil
GMU 44
Crimp, Size 20
011-00979-22
(Config Socket, Mil
module Crimp, Size 20,
26-30 AWG
w/Sockets &
Jackscrew kit)
1. Insertion/Extraction tools from ITT Cannon are all plastic; others are plastic with metal tip.
2. Non-Garmin part numbers shown are not maintained by Garmin and consequently are subject
to change without notice.
Page 1-6
Revision A
CAUTION
Garmin
Recommended
Contact Part
Positioner
Number
M22520/2-08,
336-00094-00
Daniels K13-1
Positronic P/N
9502-4,
336-00021-00
ITT P/N
M22520/2-09,
Daniels P/N K42
M22520/2-08,
336-00022-00
Daniels K13-1
Positronic P/N
336-00022-01
9502-5
NOTES
Recommended
Insertion/
Extraction Tool
M81969/1-04
for size 22D
pins and
M81969/1-02
for size 20 pins
G3X Installation Manual –Installation Overview
Recommended
Hand Crimping
Tool
M22520/2-01
190-01115-01