Lighting; Mono Audio; Stereo Audio - Garmin G3X Installation Manual

15.2.5 Lighting

The GDU 37X display brightness can be configured to track 28 VDC or 14 VDC lighting busses using
these inputs.
14V LIGHTING BUS HI
28V LIGHTING BUS HI
15.2.6 Audio

15.2.6.1 Mono Audio

The mono audio output provides audio alerts for connection to an unswitched input on an intercom or
audio panel.
MONO AUDIO OUT HI
MONO AUDIO OUT LO

15.2.6.2 Stereo Audio

The stereo audio output provides XM audio for connection to an entertainment input on an intercom or
audio panel. Audio alerts may optionally be reproduced on the stereo audio output in addition to the mono
audio output. See Section 17.3.11
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.
STEREO AUDIO OUT LEFT
STEREO AUDIO OUT LO
STEREO AUDIO OUT RIGHT
STEREO AUDIO OUT LO
190-01115-01
Rev. L
Pin Name
Pin Name
for instructions regarding the sound config page.
Pin Name
Connector
J3701
J3701
Connector
J3701
J3701
Connector
J3701
J3701
J3701
J3701
G3X Installation Manual - LRU Pinouts
Pin I/O
43 In
26 In
Pin I/O
1 Out
18 --
Pin I/O
3 Out
20 --
19 Out
2 --
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