Garmin G3X Installation Manual page 188

A.1.4.3 Configuration Module
In multiple GDU 37X installations, it is only necessary to connect a configuration module to PFD1.
Pin Name
CONFIG MODULE CLOCK
CONFIG MODULE DATA
CONFIG MODULE POWER OUT
CONFIG MODULE GROUND
A.1.5 Lighting
The GDU 37X display and keys can be configured to track 28 VDC or 14 VDC lighting busses using
these inputs.
Pin Name
14V LIGHTING BUS HI
28V LIGHTING BUS HI
A.1.6 Audio
A.1.6.1 Mono Audio
Pin Name
MONO AUDIO OUT HI
MONO AUDIO OUT LO
A.1.6.2 Stereo Audio
Pin Name
STEREO AUDIO OUT LEFT
STEREO AUDIO OUT LO
STEREO AUDIO OUT RIGHT
STEREO AUDIO OUT LO
The left and right common pins (pins 2 and 20) may be tied together or only one may be used. It is not
necessary to use both common pins.
Page A-4
Revision E
Connector Pin
P3701 33
P3701 50
P3701 17
P3701 49
Connector Pin
P3701 43
P3701 26
Connector Pin
P3701 1
P3701 18
Connector Pin
P3701 3
P3701 20
P3701 19
P3701 2
G3X Installation Manual – Pinouts
190-01115-01
I/O
I/O
I/O
Out
--
I/O
In
In
I/O
Out
--
I/O
Out
--
Out
--